Question

a train crosses 2450 m long tunnel in 112 seconds and a 1800m long bridge in 86 second how long train it will take to cross a 650 long platform.​

Answer 1

Answer:

let length of train=x m

speed in tunnel= speed on bridge

2450+x/112=1800+x/86

26x=9100

x=350m

time=350+650/25=1000/25

=40sec