basic maths Mcqs
151. 6 men and 8 women can complete a work in 10 days. 26 men and 48 women can finish the same work in 2 days. 15 men and 20 women can do the same work in_______days.
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A. 4 days

B. 8 days

C. 2 days

D. 6 days

152. The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam.
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A. 15

B. 20

C. 35

D. 25
153. A man spend Rs. 3300. This was 75% of his monthly income. His monthly income is__________?
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A. 4400

B. 5400

C. 4000

D. 5000

154. The average of first 10 natural numbers is____________?
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A. 5.5

B. 6.5

C. 5

D. 6

155. The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?
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A. 47.5

B. 52.5

C. 50

D. 59

156. The time taken by a man to row his boat upstream is twice the time taken by him to row the same distance downstream. If the speed of the boat in still water is 42 kmph, find the speed of the stream?
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A. 14 kmph

B. 13 kmph

C. 15 kmph

D. 12 kmph

157. A steamer goes downstream from one port to another in 4 hours, it covers the same distance upstream in 5 hours. If the speed of the stream is 2km/hr,the distance between the two parts is_______?
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A. 50km

B. 70km

C. 60km

D. 80 km
158. If 6 men working together can complete 50 identical tasks in 4 hours then how many such identical tasks can be completed if 10 men are working together for 6 hours?
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A. 60

B. 20

C. 25

D. 125
159. The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation?
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A. 9

B. 8

C. 7

D. 6

160. A boat running downstream covers 24 kms in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?
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A. 3.5km/hr

B. Data Inadequate

C. 6 km/hr

D. 5.5 km/hr

E. None of these
161. Two pipes P and Q can fill a cistern in 12 minutes and 16 minutes respectively. Simultaneously both the pipes are opened together, then after how much time Q should be closed so that the tank is full in 9 min ?
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A. 3 min

B. 4 min

C. 5 min

D. 2 min

162. The average weight of 25 persons sitting in a boat had some value. A new person added to them whose weight was 46 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 25 persons?
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A. None

B. 56 kg

C. 55 kg

D. 62 kg

163. The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?
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A. 840

B. 1020

C. 960

D. 1540

164. A and B can do a piece of work in 21 and 24 days respectively.They start the work together and after some days, A leaves and B completes the rest of the task in 9 days. After how many days did A leave?
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A. 7

B. 6

C. 8

D. 5

165. What are Prime Numbers?
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A. Which can be divided by Even Numbers

B. Which can be divided by any Number

C. Which can be divided by Number 1 & by itself Number

D. Which can be divided by Odd Numbers

166. The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?
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A. 70

B. 4

C. 76

D. 2

167. The average weight of a group of boys is 30 kg. After a boy of weight 35 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally?
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A. 5

B. 4

C. 6

D. 7

168. A can do a particular work in 6 days . B can do the same work in 8 days. A and B signed to do it for Rs. 3200. They completed the work in 3 days with the help of C. How much is to be paid to C?
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A. Rs. 380

B. Rs. 420

C. Rs. 600

D. Rs. 400
169. A boat goes 24 km downstream in 10 hours, it takes 2 hours more to cover the same distance against the stream. What is the speed of the boat in still water?
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A. 4 km/hr

B. None of these

C. 4.2 km/hr

D. 2km/hr

E. 2.8 km/hr

170. Sarfaraz obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?
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A. 69

B. 72

C. None of these

D. 65

171. A boat takes half time in moving a certain distance downstream than upstream. What is the ratio between the rate in still water and rate of current?
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A. 3 : 1

B. 1:02

C. 1:03

D. 2:01

172. A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?
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A. 3

B. 4

C. Insufficient data

D. 4 (1/2)

173. A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is________?
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A. 20 kmph

B. 22 kmph

C. 5 kmph

D. 10 kmph

174. The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .
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A. 151

B. 153

C. 149

D. 152

175. If two pipes function together, the cistern will be filled in 6 hrs. One pipe fills the cistern 5 hrs. faster than the other. How many hours it take the second pipe to fill the cistern?
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A. 15 hrs

B. 5 hrs

C. 10 hrs

D. 20 hrs

176. The average of the marks of 12 students in a class is 36. If the marks of each student are doubled, find the new average?
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A. 79

B. 37

C. 72

D. 45

177. A team of eight entered for a shooting competition. The best marks man scored 85 points. If he had scored 92 points, the average scores for. The team would have been 84. How many points altogether did the team score?
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A. 632

B. 656

C. 625

D. 665
178. A total of 3000 chocolates were distributed among 120 boys and girls such that each boy received 2 chocolates and each girl received 3 chocolates. Find the respective number of boys and girls?
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A. 60, 60

B. 40, 80

C. 70, 50

D. 50, 70

179. Find the average of the series : 312, 162, 132, 142 and 122?
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A. 186

B. 162

C. 174

D. 194

180. The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average of the team?
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A. 24 years

B. 23 years

C. None of these

D. 25 years

181. The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is____________?
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A. Rs. 4050

B. Rs. 3500

C. Rs. 5000

D. Rs. 4000
182. P, Q and R can complete a work in 24, 6 and 12 days respectively. The work will be completed in________days if all of them are working together.
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A. 2

B. 5

C. 4

D. 3 3?7
183. A can do a certain job in 12 days. B is 60% more efficient than A. The number of days it takes for B to do the same piece of work, is:_________?
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A. 34 days

B. 12/6 days

C. 15/2 days

D. 23 days

184. The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?
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A. 15 years

B. 18 years

C. 17 years

D. 19 years
185. A alone can finish a work in 10 days and B alone can do it in 15 days. If they work together and finish, then out of a total wages of Rs.75. A will get:___________?
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A. 45 Rs.

B. 40 Rs.

C. 35 Rs.

D. None of these

186. The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is__________?
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A. 30

B. 25

C. 35

D. 27

187. A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days. In how many days will A alone finish the job?
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A. 45

B. 48

C. 44

D. 34(2/7)

188. A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, there by increasing his average by 6 runs. His new average is_____________?
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A. 52 runs

B. 48 runs

C. 55 runs

D. 60 runs

189. The average age of M boys is b years and of n girls c years. The average age of all together is_________?
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A. (mb + nc)/ (m n) years

B. (mb nc)/ (m n) years

C. (mb + nc)/ (m + n) years

D. (mb nc)/ (m + n) years

190. Two pipes can fill a tank in 10 hrs. and 12 hrs. respectively while a third pipe empties the full tank in 20 hrs. If all the three pipes operate together , in how much time the tank will be filled ?
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A. 5 hrs

B. None of these

C. 7 hrs

D. 7.5 hrs
191. A boat goes 100 km downstream in 10 hours, and 75 m upstream in 15 hours. The speed of the stream is________?
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A. 5 km/h

B. 2 (1/2) km/h

C. 7 km/h

D. 3 km/h

192. A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
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A. 8 kmph

B. 4 kmph

C. 2 kmph

D. 16 kmph

193. The average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 24 years. Find the average age of the women?
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A. 36 years

B. 24 years

C. 30 years

D. 18 years

194. The sum of five numbers is 655. The average of the first two numbers is 85 and the third number is 125. Find the average of the two numbers?
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A. 180

B. 170

C. 190

D. 175

195. A man can row downstream at 18 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?
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A. 12, 6

B. 15, 3

C. 14, 4

D. 13, 3

196. A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
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A. 40 minutes

B. 1 hr 15 min

C. 1 hour

D. 1 hr 30 min

197. A batsman makes a score of 64 runs in the 16th innings and thus increased his average by 3. Find his average after the 16th inning?
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A. 19

B. 17

C. 18

D. 29

198. The average of non-zero number and its square is 5 times the number. The number is__________?
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A. 9

B. 29

C. 295

D. 17

199. The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?
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A. 8

B. 2

C. Cannot be determined

D. 5

200. The average runs scored by a batsman in 20 matches is 40. In the next 10 matches the batsman scored an average of 13 runs. Find his average in all the 30 matches?
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A. 28

B. 31

C. 29

D. 30