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Average aptitude questions and answers - Page 1

1. The average age of a class of 30 students and a teacher reduces by 0.5 years on excluding the age of teacher. If the average age is 14 years, find the age of the class teacher.

A. 36 years

B. 30 years

C. 29 years

D. 15 years

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2. In June, a baseball team which played 60 games, won 30% of its games played. After a phenomenal winning streak, this team raised its average to 50%. How many games must the team have won in order to attain this average?

A. 18

B. 20

C. 24

D. 26

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3. At present, the average age of father and son is 29 years. The average age of father, mother and son five years from now will be 37 years. Find the mother’s present age.

A. 38 years

B. 40 years

C. 41 years

D. 46 years

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4. The average scores of a cricketer from certain number of innings is 15. When he plays one more inning, and scores a duck his average drops to 13.5. How many innings has he played in total including the latest one?

A. 12

B. 11

C. 10

D. 9

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5. A shipping clerk has five boxes of different and unknown weights, each weighing less than 100 kg. The clerk weighs the boxes in pairs first and second, second and third and so on. The weights so obtained are 110, 112, 113, 114, 115, 116, 117, 118, 120 and 121 kg. What is the weight of the heaviest box?

A. 60 kg

B. 62 kg

C. 64 kg

D. 68 kg

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