SOLUTION: Jean runs 10 mi and then rides 8 mi onher bicycle in a biathlon. She rides 8 mph faster than she runs. If the total time for her to hr, complete te race is 1.75 hr determine her sp

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Question 1096761: Jean runs 10 mi and then rides 8 mi onher bicycle in a biathlon. She rides 8 mph faster than she runs. If the total time for her to hr, complete te race is 1.75 hr determine her speed running and her speed riding her bicycle.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
D%2FR=T, basic formula; D distance, R speed, T time

10%2Fr%2B8%2F%28r%2B8%29=1%263%2F4------solve for running speed, r.