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MathematicsMathematics
13 April, 17:27

A bus travels 20 km in 30 minutes. What is the average speed of the bus?

The answer is 40 km/h but how do I figure that out?

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Answers (2)
  1. 13 April, 18:54
    +3
    20 / 0.5 = 40

    30 minutes is 0.5 as a decimal. You then do Distance / Time to get your answer.
  2. 13 April, 20:56
    0
    20/30 = x / 60 ... 20 km to 30 min = x km to 60 min (because there is 60 minutes in an hr)

    u will then cross multiply because this is a proportion

    (30) (x) = (20) (60)

    30x = 1200

    x = 1200/30

    x = 40 ... so 20 km in 30 min = 40 km in 60 min (per hr)
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