SOLUTION: Amy paid $63.36 for a pair of running shoes during a 15% off sale. What was the regular price? Train A and B are traveling in the same direction on parallel tracks. Tran A is

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations -> SOLUTION: Amy paid $63.36 for a pair of running shoes during a 15% off sale. What was the regular price? Train A and B are traveling in the same direction on parallel tracks. Tran A is      Log On

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Question 238682:
Amy paid $63.36 for a pair of running shoes during a 15% off sale. What was the regular price?
Train A and B are traveling in the same direction on parallel tracks. Tran A is traveling at 100 miles per hour and train B is traveling at 125 miles per hour. Train A passes a station at 1:25p.m If train B passes the same station at 1:37p.m., at what time will train B catch up to train A?
Answer by checkley77(12569) About Me  (Show Source):
You can put this solution on YOUR website!
63.36=(1-.15)x
63.36=.85x
x=63.36/.85
x=$74.54 was the original price.
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D=RT
SEEING AS THE DISTANCES ARE EQUAL THEN:
100T=125(T-.2)
100T=125T-25
100T-125T=-25
-25T=-25
T=-25/-25
T=1 HOUR THEY WILL MEET.