Question

A train speeds past a pole in 15 seconds and a platform 100 meter long in 25 seconds. What is length of the train ?

Answer 1

Heya mate here is ur answer

A train speeds past a pole in 15 seconds and a platform 100 meter long in 25 seconds. What is length of the train ?

Let the length of the train is x meter and Speed of the train is y meter/second

Then x/y = 15 [because distance/speed = time]

=> y = 15/x

=> \frac{x+100}{25} = \frac{x}{15} \\

x = 150 \text{ meters}







So length of the train is 150 meters

Answer 2

Let the length of the train be x metres and its speed by y m/sec.

Then, x/y= 15 => y = x /15

Therefore x + 100/25 = x/15

=> 15(x + 100) = 25x

=> 15x + 1500 = 25x

=> 1500 = 10x

=> x = 150 m.

HOPE IT HELP❤❤❤❤