Answer for - two trains for delhi leaves jaipur at 8:30 and 9 am and travel at 60km/h and 75km/h respectively. how many km away from jaipur will the two trains meet ?
Answers
A start = 8:30 , B start = 9:00
A cross = 60*1/2h
A cross distance = 60*1/2h = 30 km
(B–A) speed = (75–60) = 15km/h
B takes time to meet train A = 30/15 = 2 hours
distance from jaipur = 75*2 = 150km ans
Concept: Speed= Distance/Time
Given: First train starts at 8:30 a.m. with 60 km/hr speed.
Second train starts at 9 a.m. with 75 km/hr
Find: After how many kilometer they meet away from the Jaipur.
Solution:
Distance traveled by the train at 60 km/hr in 30 min =speed × time
= 60× 30/60
= 30 km
The distance of 30 km is to be covered with a relative speed of (75-60) km/hr is 15 km/hr.
Time taken to cover this distance = distance/speed
= 30/15
= 2 hour
Hence, the train will be together after 2 × 75 km/hr is 150 km from Jaipur.
Final answer: After 150 km both trains meet together.
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