Question

in a zoo there was enough food to feed 60 animals for 20 days how long would the food last if there were 40 more than animals in the zoo​

Answer 1

Answer:

Let the food will now last for x days. Then,

Number of animals 20 30

Number of days 6 x

Clearly, more is the number of animals, less will be the number of days for food to last.

So, it is a case inverse proportion.

∴ 20 × 6 = 30x ⇒ x =

30

20×6

= 4

Hence, the food will now last for 4 days.