Question
In covering a distance of 30 km, Amla takes 2 hours more than Peter. If Amla doubles his speed, then he would take 1 hour less than Peter. Amla’s speed is :
Answer: Option D
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Let Peter’s speed be x km/hr.
Then, 30/x - 30/2x = 3
⇔ 6x = 30
⇔ x = 5 km/hr
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