Question

400 ducks consume a reservoir of feed in 30 days, how long will it take 500 ducks

Answer 1

24 days

Explanation:

It is an inverse proportion, the more ducks the less days the food lasts

400 ----- 30

500 ----- X

`x=((400)(30))/(500) =(12000)/(500) =24`

Hope this helps

Answer 2

24 days.

Explanation:

First lets look at the facts.

400 ducks can eat a bunch of feed in 30 days.

That means that 200 ducks would take 60 days.

100 ducks would take 120 days.

Now, we must multiply 100 by 5 to get 500, the target amount of ducks, and divide 120 by 5 to get 24. So, 500 ducks can eat a reservoir of feed in 24 days.