arithmetic MCQs – Page 5

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

arithmetic Mcqs

81. The average of the two-digit numbers, which remain the same when the digits interchange their positions, is__________?
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A. 33

B. 44

C. 66

D. 55

82. Five years ago the average of the ages of A and B was 40 years and now the average of the ages of B and C is 48 years. What will be the age of the B ten years hence?
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A. Data inadequate

B. 56 years

C. 58 years

D. 55 years

83. 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. 6

B. 7

C. 5

D. 4

84. 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. 50

B. 54.6 approx.

C. 45

D. 51.4 approx.

85. 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. 4000

D. Rs. 5000

86. The total marks obtained by a student in Mathematics and Physics is 60 and his score in Chemistry is 20 marks more than that in Physics. Find the average marks scored in Mathematics and Chemistry together.
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A. 30

B. 40

C. Data inadequate

D. 25

87. A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
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A. 31 5/7 years

B. None of these

C. 28 4/7 years

D. 32 1/7 years

88. The total marks obtained by a student in Physics, Chemistry and Mathematics is 150 more than the marks obtained by him in Physics. What is the average mark obtained by him in Chemistry and Mathematics?
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A. 75

B. 50

C. None of these

D. 150

89. The average of 10 numbers is 23. If each number is increased by 4, what will the new average?
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A. 25

B. 22

C. 27

D. 29

90. What is the Arithmetic Mean of the following data3,6,9,12,15.
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A. 7

B. 12

C. 8

D. 9

91. If the arithmetic mean of seventy five numbers is calculated, it is 35. If each number is increased by 5, then mean of new number is___________?
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A. 90

B. 30

C. 70

D. 40

92. 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. 72

C. 45

D. 37

93. 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. 2

B. 76

C. 4

D. 70

94. 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. 60 runs

B. 52 runs

C. 55 runs

D. 48 runs

95. The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?
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A. 17 kg

B. 20 kg

C. 31 kg

D. 26 kg

96. Express 1.09 in term of Percentage.
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A. 10.90%

B. 1.09%

C. 109%

D. None of these

97. In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the rate in the remaining 40 overs to reach the target of 282 runs?
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A. 6.25

B. 6.75

C. 6.5

D. 7

98. The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___________?
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A. 39.1

B. 36.1

C. 36.5

D. 35.2

99. 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. 29

D. 18

100. The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?
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A. 5000

B. 3000

C. 2500

D. 4500

Showing 81 to 100 of 102 mcqs