math
posted by Anonymous .
A cyclist leaves his training base for a morning workout, riding at the rate of 18 mph. One hour later, his support staff leaves the base in a car going 45 mph in the same direction. How long will it take the support staff to catch up with the cyclist?

same distance, 3/4 hr difference.
d=18t
d=45(t3/4)
set them equal, solve for t, the total time the cyclist biked. Then, solve for t3/4 
2/3