In a hostel of $50$ students, food provisions last $40$ days. If after $10$ days, $30$ more students join, the remaining food will now last:

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Aicharya · Accepted Answer

After $10$ days, food left $= 50 	imes (40 - 10) = 1500$ student-days. Now there are $80$ students, so it lasts $\dfrac{1500}{80} = \dfrac{75}{4} = 18.75$ days.

In a hostel of $50$ students, food provisions last $40$ days. If after $10$ days, $30$ more students join,…

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