Mental Ability MCQs

Averages / Mixtures (manipulation) Questions with solutions MCQs

1. There are 40 students in a hostel. If the number of students is increased by 10, the expenditure on food has increased by Rs.50 per day. However, the average expenditure on food of students is reduced by Rs.1 per day. What was the initial expenditure on food per day?

A

432

B

442

C

420

D

400

Averages / Mixtures (manipulation) Veterinary Pharmacist 2024
Correct Answer : D
Explanation :

Let initial total = T. New total = T+50 for 50 students. New avg = (T+50)/50 = T/40 - 1. Solve → T = 400.

Correct Answered :

Wrong Answered :

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