1.

A hostel spends ₹ 3200 on food for 20 students for 30 days. If they spend ₹ 2400 for 30 students, then for how many days will the food last?

Answer»

Rs. 3200 for 20 students for 30 days so per student per day expenditure is 3200/(20×30) = 5.333 Rs.

So one day's expense for 30 students= 5.333×30= 160 Rs.

So number of days to use 2400 Rs. = 2400/160=15 days



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