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18 September, 20:52

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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Answers (2)
  1. 18 September, 21:03
    0
    Ok, so here we need to set up a proportion.

    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 answer: 2.5 minutes
  2. 18 September, 21:08
    0
    - Each person stacks 20 in one minute.

    - 5 people can stack 100 in 5 minutes.

    If so, how long would 250 take them?

    - - The same 5 people can stack 250 in (250/100) = 2.5 minutes.
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