basic maths MCQs – Page 8

Practise focused basic maths questions with marked answers for exam preparation and subject revision.

basic maths Mcqs

141. P works twice as fast as Q. If Q alone can complete a work in 12 days, P and Q can finish the work in________days
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A. 2

B. 3

C. 1

D. 4

142. Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?
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A. Rs.3

B. Rs.4.50

C. Rs.7.50

D. Rs.5.00

143. The average of 18 observations was calculated and it was 124. Later on it was discovered that two observations 46 and 82 were incorrect. The correct values are 64 and 28. The correct average of 18 observations is___________?
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A. 123

B. 137

C. 121

D. 122

144. A person travels from x to y at a speed of 40Km/h and returns by increasing his speed 50%. What is his average speed for both the trips?
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A. 50km/h

B. 45km/h

C. 36km/h

D. 48km/h

145. The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___________?
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A. 54.6 approx.

B. 51.4 approx.

C. 50

D. 45

146. A boat travels upstream from B to A and downstream from A to B in 3 hours. If the speed of the boat in still water is 9km/hr and the speed of the current is 3km/hr, the distance A and B is:_______?
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A. 8 km

B. 4km

C. 6 km

D. 12 km

147. 4 men and 2 woman can complete a work in 2 days. If 2 men alone take 5 days to complete the work, find the time taken by 2 women alone to complete the work.
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A. 10 days

B. 8 days

C. 15 days

D. 20 days

148. The average age of a group of 10 persons was decreased by 3 years when one person, whose age was 42 years, was replaced by a new person. Find the age of the new person?
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A. 12

B. 8

C. 22

D. 24

149. Three years ago the average age of a family of six members was 19 years. A boy have been born, the average age of the family is the same today. What is the age of the boy?
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A. 1.5 years

B. 2 years

C. 2.5 years

D. 1 year

150. A can complete a work in 12 days with a working of 8 hours per day. B can complete the same work in 8 days when working 10 hours a day. If A and B work together, working 8 hours a day, the work can be completed in_______days.
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A. 6 4?11

B. 5 5?11

C. 6 5?11

D. 4 5?11

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

Showing 141 to 160 of 238 mcqs