Question
A certain distance covered at a certain speed. If half of this distance is covered in double the time the ratio of the two speeds is
Answer: Option A
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Let x kms be covered in y hours, then first speed = x / y km/hr
Again x/2 km is covered in 2y hrs
Therefore, new speed = (x/2 x 1/2y)km/hr
= (x/ 4y) km/hr
Ratio of speeds = x/y : x/4y = 1 : ¼
= 4 : 1
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