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donivin
31.10.2019 •
Mathematics
How many minutes will it take 5 people to stack 250 chairs if each person can stack 20 chairs a minute?
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Ответ:
20*5 = 100
So in a minute, the 5 people have 100 chairs stacked.
1/100 = x/250
Cross multiply
1*250 = 100x
250 = 100x
250/100 = x
x = 2.5
So it would take 5 people 2.5 minutes to stack 250 chairs.
Final 2.5 minutes
Ответ:
step-by-step explanation: