Examveda
Examveda

There were 35 students in a hostel. Due to the admission of 7 new students the expenses of the mess were increased by Rs.42 per day while the average expenditure per head diminished by Re 1. What was the original expenditure of the mess?

A. Rs. 450

B. Rs. 320

C. Rs. 550

D. Rs. 420

Answer: Option D

Solution(By Examveda Team)

Let the original average expenditure be Rs. x then, 42(x - 1) - 35x = 42
⇒ 7x = 84
⇒ x = 12
Therefore original expenditure,
= Rs. (35 × 12)
= Rs. 420

This Question Belongs to Arithmetic Ability >> Average

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Comments ( 1 )

  1. Sonali Rajak
    Sonali Rajak :
    3 years ago

    Can anybody explain this ???

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