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15 May, 13:53

Ian walks 2 km to his best friend's house, then walks 0.5 km to the library. He then makes a 2.5 km walk home. The entire walk took him 3 hours. What is his average speed in km/h?

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  1. 15 May, 14:11
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    Average speed = (total distance covered) / (time to cover the distance)

    Ian's total distance covered = (2km + 0.5km + 2.5km) = 5 km.

    His time to cover the distance = 3 hours.

    Average speed = (5 km) / (3 hrs)

    Average speed = (5/3) (km/hr)

    Average speed = 1.67 km/hr
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