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30 March, 18:07

The speed of sound is approximately 1.2 x 10^3 km/h. How long does it take for sound to travel 7.2 x 10^2 km? Write your answer in minutes.

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  1. 30 March, 18:26
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    36 minutes

    Step-by-step explanation:

    time = distance / speed

    time = (7.2*10² km) / ((1.2*10³ km) / (60 min)) = (7.2*60/1.2) * 10²⁻³ min

    = 360*10⁻¹ min

    = 36 min

    It takes sound about 36 minutes to travel 720 km.
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