Mr. Kumar drives to work at an average speed of 48 Km/hr. The time taken to…
Mr. Kumar drives to work at an average speed of 48 Km/hr. The time taken to cover the first 60% of the distance is 10 minutes more than the time taken to cover the remaining distance. How far is his office?
Answer: B. 40 Kms — Key idea: At the same average speed, time is proportional to distance. The first 60% and remaining 40% of the distance have time ratio 60:40 = 3:2. The…
- A.
30 Kms
- B.
40 Kms
- C.
45 Kms
- D.
48 Kms
Attempted by 50 students.
Show answer & explanation
Correct answer: B
Key idea: At the same average speed, time is proportional to distance.
The first 60% and remaining 40% of the distance have time ratio 60:40 = 3:2.
The difference between those times is 1 part, given as 10 minutes.
Total time = 3 + 2 = 5 parts = 50 minutes = 5/6 hour.
Distance = speed × time = 48 × 5/6 = 40 km.
Answer: Option 1, 40 Kms, is correct.