Two trains a and b start from station x and y towards y and x respectively. after passing each other they take 4 hours 48 minutes ans 3 hour 20 minutes to reach y and x respectively. if train a is moving at 45 km/hr, then the speed of train b is ?
Answers
Answered by
7
A's speed / B's speed
= √(Time taken by B to reach X) / (Time taken by A to reach Y)
⇒ 45/B's speed = √(10/3) x (5/24) = 5/6
∴ B's speed = 45 x (6/5) km/hr = 54 km/hr.
Explanation :
Speed of 2nd train= Speed of first train ×(√Time taken by 1st train after meeting/√Time taken by 2nd train after meeting)
= √(Time taken by B to reach X) / (Time taken by A to reach Y)
⇒ 45/B's speed = √(10/3) x (5/24) = 5/6
∴ B's speed = 45 x (6/5) km/hr = 54 km/hr.
Explanation :
Speed of 2nd train= Speed of first train ×(√Time taken by 1st train after meeting/√Time taken by 2nd train after meeting)
Similar questions