Question

A group of 48 ants have food for 16 days but 12 ants died after 4 days due to rain. For how many days the remaining food will be enough

Answer 1

there are 48*16 food portions
after 4 days, 48*4 portions have been eaten.

So, there is enough for (48*16 - 48*4)/(48-12) = 16 days

or, after 4 days, 1/4 of the food is eaten. That leaves enough for 12 days for the full population. But, the population is now 3/4 what it was, meaning it will last 4/3 as long, or 16 more days.

Answer 2

16