Question
Meena left from her house on a scooter at 18 m/s. Her
sister Neha started 6 seconds later on a bike and caught up to Meena in 36 seconds. What was Neha's speed?Solution
ATQ,
Distance covered by Meena in 6 seconds = 18 × 6 = 108 metres
Relative speed between Neha and Meena = 108 ÷ 36 = 3 m/s
Neha must be faster.
So, Neha’s speed = 18 + 3 = 21 m/s
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