The average weight of 20 students in a class is decreased by 500 grams when one of the students who weights 40 kg is replaced by a new boy. The weight of the new boy is?
Correct answer C. 30 kg
Tip: press A, B, C or D to answer, and N for the next question.
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More Age Questions questions
See allThe average age of 6 men is increased by 3 years when two of them whose ages are 25 and 27 years are replaced by two men. The average age of two newcomers is?
Correct answer D. 35 years
There were 40 members in a certain hostel. If 10 members are more admitted the expenses of the mess was increased by Rs. 50 per month while the average expenditure per head diminished by Rs.3. The original monthly expenses are?
Correct answer B. Rs.800
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The average income of a group of 3 men V W and X is 54 rupees. An other man Y joins their group and the average now becomes 50 rupees. If another men Z Whose income is 5 more than Y replaces V and average of W X Y and Z becomes 49. What is the income of V?
Correct answer A. 47
Average cost of 100 eggs is 2 rupees. It is lowered to 1.5 on buying an additional 100 eggs. What is the difference of cost of additional 100 eggs and previously purchased 100 eggs?
Correct answer C. Rs. 150
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