Question

A train travelling at a speed of 72 km/hr crosses two tunnels in 15 sec and 24 sec respectively. If the length of second tunnel is 180 m more than that of the first, then the length of second tunnel is​

Answer 1

Answer:

3600m is the length of the first tunnel and the length of the second tunnel is 3780m  

Step-by-step explanation:

Train speed : 72km/hr

Difference between the 2 tunnels : 180m

Time crossed of 1st tunnel : 15 sec

Time crossed of 2nd tunnel : 24 sec

Km/hr = 72km the Km in seconds will be 0.02. So if we multiply with 0.02 until we get 72 that is the answer. Here, the answer is 3600 which is the length of the first tunnel. Here they said that the second tunnel is 180m more than the first tunnel. So, we add 180 to 3600 and we get the answer as 3780m