Question

How many minutes will it take five people to stack 250 chairs if each person can stack 20 chairs a minute

Answer 1

250/5 = 50.....so each person is stacking 50 chairs...

50/20 = 2.5 minutes....so it takes each person 2.5 minutes to stack 50 chairs.

so ur answer is 2.5 minutes

Answer 2

All  you have to do is divide 250 by 20.
250 / 20 = 12.5
20 x 10 = 200
20 x 2 = 40