Ranjeet drives his car at an average speed of 50km/hr and reaches his destination in 8 hours. Rahman covers the same distance in 5 hours. If Ranjeet increases his speed by 10km/hr and Rahmani increases his speed by 20km/hr, then what will be the difference in time taken by them to reach their destination?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 2 hours 40 min
| Understanding | Application |
| Tricks |
Total distance = 50 × 8 = 400km |
| Now |
After increasing speed Ranjeet cover = 400/60 = 6 hours 40 min Rahman cover = 400/80 + 20 = 400/100 = 4 hours |
| Hence |
Time difference = 6 hours 40 min - 4 hours = 2 hours 40 min |