**Question:**

Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is : A. 1 : 3 B. 3 : 2 C. 3 : 4 D. None of these

Train B=y

Then speed of A= x/27

B= y/17

Given it cross each other in 23 sec means

(x+y)/(x/27)+(y/17) =23

After solve this equation

X=(81/34)y

Then speed of train A=(3/34)y

B=(1/17)y

Ratio= 3:2 ans

Please explain

3:__2__