math
posted by kel on .
in a bike race, ramit and keith started at the same time abd rode with constant speeds. Ramit rode 30 miles per hour, and keith rode at 35 miles per hour. If ramit crossed the finish line 10 minutes after keith, how many miles long was the race?

10 min = 1/6 hr
distance = rate * time
30 t = 35 (t1/6)
30 t = 35 t  35/6
35/6 = 5 t
t = 7/6 hr
d = 30 t = 30*7/6 = 5*7 = 35 miles 
10.267

juan entered a bike race which he was to ride 45 miles. stopping at certain intervals during the race to check in with the scorers .he checked in 9 times before crossing the finish line if the intervals wre eaqually spaced throughoutthe race,how far apart were they?