Work Time2018-12-06T16:18:58+10:00

Maths Made Easy Forums Standard Rates & Ratios Work Time

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    If it takes 12 students 50 minutes to inflate 200 helium balloons, how long will it take 7 students working at the same rate (to the nearest minutes)?

    if it takes 12 people 50 minutes, then it would take one person 50 times longer:
    50 × 12 = 600 minutes
    600 ÷ 7 = 85.7 minutes (this will be 7 times quicker)
    = 86 minutes

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