SOLUTION: A, B, and C each drove 100 mile lengths of a 300 mile course at speeds of 40, 50 and 60 miles per hour respectively. What fraction of the total time did A drive?

Question 621942: A, B, and C each drove 100 mile lengths of a 300 mile course at speeds of 40, 50 and 60 miles per hour respectively. What fraction of the total time did A drive?

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A, B, and C each drove 100 mile lengths of a 300 mile course at speeds of 40, 50 and 60 miles per hour respectively.
:
Find the total time (time = dist/speed)
t = + +
t = + +
t = + +
t =
total = hrs
:
"What fraction of the total time did A drive?"
A time/total time. (Invert the dividing fraction and multiply)
*
t =
t = of the total time