Places A and B are 396 km apart. Train X leaves from A for B and Train Y leaves from B for A at the same time on the same day in parallel tracks. Both trains meet after 5.5 hours. The speed of Y is 10 km/hr more than that of X. What is the speed of Y (in km/hr) ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 ie 41.
t = constant
Speed Ratio
x + y = 396 / (11/2)
= 36 × 2 = 72
x + y = 72
x + x + 10 = 72
x = 31
y = 41