Question

the speed of two trains are in the ratio of 3 is to 5 if the speed of the first train is 15 km per hour then what is the speed of the second train​

Answer 1

May be
I am nit sure
Let the speed of second train be x
According to the question
Speed of first train : speed of second train =3:5
=> 15/x = 3/5
x = 25km/hr

Answer 2

Let the speed of first train be 3x.

Second train be 5x

So,

A/q, 3x =15km/hr

X = 5 km/hr

Then,

Speed of train = 5x= 5*5

=25 km/hr