Sahil travelled a certain distance by bike at the rate of 25 kmph. And walked back at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, what was the distance?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 20 km.
Let distance = d km
Total time = 5 hr 48 min = 29/5 hr
d/25 + d/4 = 29/5
⇒ 4d + 25d = 580
⇒ 29d = 580
⇒ d = 20 km