# What will be the Speed of Y? If

Two trains X and Y start from jodhpur to jaipur and from jaipur to jodhpur respectively. After passing each other they take 4 hr 48 min and 3 hr 20 min to reach jaipur and jodhpur respectively. If X is moving at 45 km/hr, the speed of Y is

- 60 km/hr
- 58 km/hr
- 54 km/hr
- 64.8 m/hr

**Answer: (4) 64.8 km/hr**

**Explanation:-**

The speed of the train X = 45 km/hr.

Time taken by train X to cover distance = 4 hr 48 min = 4 + 48/60

= 4 + 4/5 = 24/5 hr.

Covered distance by train X in 24/5 hr = 24 x 45/5 = 24 x 9 = 216 km.

covered distance by train X before cross = covered distance by train Y after cross (Given in question)

Then, Time taken by train Y to cover 216 km = 3 hr + 20 min

= 3 + 20/60 = 3 + 1/3 = 10/3 hr.

Then, the speed of train Y = 216/(10/3)

= 216 x 3/10

= 64.8 km/hr.

Hence, the answer is (4) 64.8 km/hr.