IBPS Clerk Prelims Model Paper 21

Let the average mess expenditure per student be x.
Then, total expenditure = 36x
After 19 students leave, new expenditure = 36x – 48
According to the question,
36x – 48 = 17(x + 5)
36x – 48 = 17x + 85
19x = 133 ⇒ x = 7
New expenditure = 36 × 7 – 48 = 252 – 48 = 204