Question 50885
so sound travels 5 time faster in the water which means that it will take 5M time rather than M time to travel through the air.
if we are talking about a 8 times longer way it will take 40M in the air, 8M in the water.
subtract the 8M from 40M to see the difference; that is 32!
32M - 8M or you can use this; 8(4M-M)