Question

A car travel 3 hours. In first hour it travelled 30 kilometre, 45000 m in second hour and 7500000 cm in third hour. Find average speed in kilometre per hour ​

Answer 1

`45000 \: m * (1 \: km)/(1000 \: m)`

45 km in the 2nd hour

`7500000 \: cm * (1 \: m)/(100 \: cm) * (1 \: km)/(1000 \: m )`

75 km in the 3rd hour

`((75 - 30))/((3 - 1))`

22.5 km/h

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