A man riding his bicycle covers 150 metres in 25 seconds. What is his speed in k

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A man riding his bicycle covers 150 metres in 25 seconds. What is his speed in km per hour ?

Options:

A . 20

B . 23

C . 21.6

D . 25

Answer: Option B
Answer: (b)Using Rule 1,Speed = $150/25$ = 6 m/sec= $6 × 18/5 = 108/5$ = 21.6 kmph

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