Question

If a train A passes a pole in 40 sec and another train passes it in 50 sec. The length of train A is 1/3 of length of train B .then what is the ratio of speed of train A to train B

Answer 1

Answer:

Ratio of their speed comes as 5:12

Step-by-step explanation:

Let length of two trains be L1 and L2

And speed be S1 and S2

Now

Speed=distance/time

So,For first train

S1=L1/40

And for 2nd train

S2=L2/50

Here L1=(1/3)L2 that is

Put L2=3L1 in 2nd equation solve it

You will get

S1/S2= 5/12