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A car takes 50 minutes to cover a certain distance at a speed of 54 km/h. If the speed is increased by 25%, then how long will it take to cover three-fourth of the same distance?

A40 minutes

B30 minutes

C35 minutes

D25 minutes

Answer:

B. 30 minutes

Read Explanation:

Speed is inversely proportional to the time Speed ratio = 4 : 5 Time ratio = 5 : 4 5 = 50 minutes So, 4 = 40 minutes But 40 is for the total journey then for 3/4th it is 40 × 3/4 = 30 minutes


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