Question

Ramu starts from P towards Q at a speed of 30 kmph and after every 12 min increase his speed by 5 kmph. If the distance between P and Q is 52 km, then how much time does he take to cover the distance?

Answer 1

Answer:

Ramu starts from P towards Q at a speed of 30 kmph and after every 12 min increase his speed by 5 kmph. If the distance between P and Q is 52 km, then how much time does he take to cover the distance? 72 minutes. But here we get the answer as 51 so time will be in seconds.16-Jun-2020

Answer 2

Answer:

Distance covered at each speed is distance covered in 1/5 hour at that speed.

The speeds are 30, 35, 40, 45, 50, 55 …

The distance covered is 6, 7, 8, 9, 10, 11 kms …

Distance covered in 12 x 6 = 72 minutes 6 + 7 + 8 + 9 + 10 + 11 = 51 kms

Remaining 1 km covered in 1/60 hours or 1 minute.

Total time = 72 + 1 = 73 minutes.