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?
Answer & explanation
Correct answer: option 3
Speed is increased by 25% .
So , Ratio of Initial New
Speed 4 : 5
Time 5 : 4
According to question ,
5R = 50 minutes
1R = 10 minutes
4R = 40 minutes
Time taken to cover \(\frac{3}{4}\)th of distance with new speed = \(\frac{3}{4}\) × 40 = 30 minutes