SOLUTION: Person A and person B start from the same location, at the same time. They ride their bikes in opposite directions for 3 hours, at which time they are 102 miles apart. person A rid
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Question 622298: Person A and person B start from the same location, at the same time. They ride their bikes in opposite directions for 3 hours, at which time they are 102 miles apart. person A rides 4 miles per hour faster than person B. Find the rate of each rider.
I am having trouble figuring out the equation. I made a table that looks like this:
D R T
A r+4 3
B r 3 Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! Person A and person B start from the same location, at the same time. They ride their bikes in opposite directions for 3 hours, at which time they are 102 miles apart. person A rides 4 miles per hour faster than person B. Find the rate of each rider.
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let x=rate of rider B
x+4=rate of rider A
distance=travel time*rate
..
3x+3(x+4)=102
3x+3x+12=102
6x=90
x=15
x+4=19
ans:
rate of rider B=15 mph
rate of rider A=19 mph
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