A man walked for 3 hours at 4.5 km/h and cycled for some time at 15 km/h. Altogether, he traveled 21 km. Find the time taken for cycling.
- 1/2 hour
- 1 hour
- 1 1β2 hours
- 2 hours
- 2 1β2 hours
The man walked the distance = 3 x 4.5 = 13.5 km. The distance cycled by the man = 21 - 13.5 = 7.5 km
As he cyled 15 km in 1 h
he cycled 1 km in 1/15 h
Finally, he cycled 7.5 km in 7.5/15 = 1/2 h