Question

Two trains x and y starts from station A and B
towards B and A respectively. After passing each
other they take 4 hours 48 minutes and 3 hours 20
minutes to reach B and A respectively. If train x is
moving at 60 km/hr., then find the speed of train y?​

Answer 1

Answer:

the answer is 45 km/hr speed of train y

Answer 2

Answer:

72 km/h

Step-by-step explanation:

Let the speed of the train A be x km/h.

And speed of the train B be y km/h.

$\frac{x}{y}=\sqrt\frac{t_2}{t_1}$

The time taken by train A is ${t}_1$

= 4 hours 48 min.

= $4\frac{48}{60}$

= $\frac{24}{5}h$

The time taken by train B is ${t}_2$

= 3 hours 20 min.

=$3\frac{20}{60}$

=$\frac{10}{3}h$

$\frac{60}{y}=\sqrt{\frac{10/3}{24/5}}$

$\frac{60}{y}=\frac{5}{6}$

y=72 km/h

The speed of train y = 72km/h.