Question

a fast-moving train is 9/10 kilometre away from a tunnel if it covers 1/10 kilometre in each second how many seconds will it take to enter the tunnel ​

Answer 1

Answer:

9 sec

Step-by-step explanation:

train is 0.9 km away

speed of train is 0.1 km per second

time taken to enter = 0.9/0.1 = 9sec