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

$45000 \: m \times \frac{1 \: km}{1000 \: m}$

45 km in the 2nd hour

$7500000 \: cm \times \frac{1 \: m}{100 \: cm} \times \frac{1 \: km}{1000 \: m }$

75 km in the 3rd hour

$\frac{(75 - 30)}{(3 - 1)}$

22.5 km/h

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