A train 700 m long is running at the speed of 72 km per hour It in crosses a tunnel in 1 minute, then the length of the tunnel is:

A train 700 m long is running at the speed of 72 km per hour It in crosses a tunnel in 1 minute, then the length of the tunnel is:

A train 700 m long is running at the speed of 72 km per hour It in crosses a tunnel in 1 minute, then the length of the tunnel is:


A. 500 m

B. 550 m

C. 600 m

D. 700

ANSWER : 500 m