Train 800m long. I drove past the station attendant in 40 seconds, and the tunnel took 1.5 m

Train 800m long. I drove past the station attendant in 40 seconds, and the tunnel took 1.5 minutes. Find the length of the tunnel.

Let’s solve the problem using proportions.

First, let’s find out the time that the train will stay in the tunnel.

90 – 40 = 50 (seconds) – time in the tunnel.

Now, using the proportion, we find out the length of the tunnel.

800 meters = 40 seconds;
x meters = 50 seconds.

(800 * 50): 40 = 40,000: 40 = 1000 (meters) – the length of the tunnel.

Answer: 1000 meters is a tunnel.