SOLUTION: From a point on a stright road, Chris and elena ride bicycles in the same direction. Chris rides at 10 mph and Elena rides at 12 mph. In how meany hours will thay be 9 miles apart?
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Question 907410: From a point on a stright road, Chris and elena ride bicycles in the same direction. Chris rides at 10 mph and Elena rides at 12 mph. In how meany hours will thay be 9 miles apart?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
12t-10t=9
(12-10)*t=9
2*t=9
t=4.5 hours
check
4.5*12=54
4.5*10=45
54-45=9
ok
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