Question

13. 1200 soldiers in a fort had enough food for 28 days. After 4 days, some soldiers were
sent to another fort and thus, the food lasted for 32 more days. How many soldiers left​

Answer 1

Answer:

It's easy

Step-by-step explanation:

Proportional method

As the number of soldiers decreases, the number of days the food lasts will increases. As the number of soldiers increases, the number of days the food lasts, will decrease. So number N of soldiers is inversely proportional to the number D of days.

So N = K / D, where K = constant of proportionality

when N = 1,200 then D = 24

So K = N D = 1,200 * 24

When D = 32, N = K / D = 1, 200 * 24 / 32 = 900

Hence, there were only 900 soldier after 4 days. So 1200 - 900 = 300 soldiers are transferred.

I think it helps you