Question
The speeds of three cars are in the ratio 5 : 3 : 4. The
ratio between the time taken by these cars to cover the same distance is:Solution
ATQ,
Speed ratio = 5 : 3 : 4 Time ∝ 1 / Speed → 1/5 : 1/3 : 1/4 Convert to common denominator (LCM = 60): 1/5 = 12/60, 1/3 = 20/60, 1/4 = 15/60 Time ratio = 12 : 20 : 15
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