Question

q 100m long train,remaining at a speed of 48km/hr passes a tunnel in 21sec l.let's calculate the length of the tunnel.​

Answer 1

Answer:

180.

Step-by-step explanation:

• T + B = 48× 5/18× 21
• 100 + B = 40/3× 21
• 100 + B = 280
• B = 280 - 100
• So it's length is
• B = 180.

Answer 2

Answer:

Step-by-step explanation:A 100 m long train running at a speed of 48 km/hr passes a tunnel in 21 seconds. Find the length of the tunnel. (Use rule of three method that i.e proportional method). [6]