Question
A cyclist can usually travel 90 metres in 5 seconds. How
much distance (in km) can the cyclist cover in 4 hours if he rides at 80% of his normal speed?Solution
ATQ,
Normal speed of the cyclist = 90/5 = 18 m/s
80% of normal speed of the cyclist = 18 × 0.8 = 14.4 m/s = 14.4 × 3.6 = 51.84 km/h
So, distance travelled in 4 hours = 51.84 × 4 = 207.36 km
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