Posted by Celina on Thursday, November 20, 2008 at 5:19pm.
I'm having a little trouble with this problem...
Please try and walk me through the problem, too:
#1. A motorboat leaves a dock and travels at an average speed of 15 mi/h toward an island. The average speed on the return trip is 10 mi/h. How far is the island from the harbor if the total trip takes five hours?
#2. A car traveling at 88 km/h overtakes a bus traveling at 64 km/h. If the bus has a 1.5 hour head start, how far from the starting point does the car overtake the bus?
#3. A car and a bus leave the same time from the same place headed in the same direction. The average speed of the car is 30 mi/h slower than twice the speed of the bus. In 2 hours, the car is 20 mi ahead of the bus. Find the rate of the car.
Thank you so much! Any help is appreciated!

Algebra! Help needed!  drwls, Thursday, November 20, 2008 at 5:42pm
I count three problems.
#2. The bus starts out 64 x 1.5 = 96 km ahead and after the car starts, the distance between them decreases at a rate of 8864 = 24 km/h.
Divide 96 km by 24 km/h for the answer, in hours.
Try the others yourself and someone will gladly critique your work.

Algebra! Help needed!  Anonymous, Thursday, November 20, 2008 at 5:47pm
#1) x=distance to the harbor
15mph/x + 10mph/x = 5 hrs
25mph/x=5hrs
25mph=5hrs(x)
x=5 miles
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