SOLUTION: The speeds of three cars are in the ratio 5:4:6.The ratio between the time taken by them to travel the same distance is a)5:4:6 b)6:4:5 c)10:12:15 d)12:15:10

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: The speeds of three cars are in the ratio 5:4:6.The ratio between the time taken by them to travel the same distance is a)5:4:6 b)6:4:5 c)10:12:15 d)12:15:10       Log On


   



Question 138762: The speeds of three cars are in the ratio 5:4:6.The ratio between the time taken by them to travel the same distance is
a)5:4:6 b)6:4:5 c)10:12:15 d)12:15:10

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The speeds of three cars are in the ratio 5:4:6.The ratio between the time taken
:
Time varies inversely with speed: time = dist/speed:
:
Find the least common multiple of 5, 4, 6; that would be 60; use that for dist:
60%2F5; 60%2F4; 60%2F6
that would give you: 12:15:10