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26 May, 03:01

A boat moves 15.0 km across a lake in 30.0 min. what was the average speed of the boat in kilometers per hours?

a. 15.0 km/h.

b. 30.0 km/h.

c. 7.50 km/h.

d. none of the above.

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  1. 26 May, 05:13
    0
    To work out the average speed you would have to use the formula

    AS = 15.0 : 30.0 = 0.5 which is distance divided by time.

    The you would do 0.5 x 60 = 30 (60 minutes = 1 hour)

    So the average speed would be 30.0 km/h.
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