if a certain amount will last 50 days for 200 soldiers how long will it last if 50 soldiers are added to?

Question

original number at the end of 20 days

Answer 1

Amount = (50 days) * (200 soldiers) = 10,000 soldier-days

Amount used in 20 days
Amount = (20 days) * (200 soldiers) = 4,000 soldier-days

Amount Left = 10,000 - 4,000 = 6,000
___________

Days left = 6,000 / 250 = 24 days

20 + 24 = 44 days

The supplies will last 44 days in all.

Answer 2

At end of 20days supply will be
(30*200)/250 = 24days
total days 20+24=44days