a bus trip

by **capthan** Thu Apr 10, 2008 9:30 am

A bus trip of 450 miles would have taken 1 hour less if the average speed S for the trip had been greater by 5 miles per hour. What was the average speed S, in miles per hour, for the trip?
10
40
45
50
55
Please explain your answer. Thanks

by **rfernandez** Fri Apr 11, 2008 3:11 am

Please indicate the source of the question. Thanks!

Rey