Question 1118392
<s>If total trip was 15 miles done in two equal halves</s>-----not this...


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... rom one end of the 15-mile bike trail to the other end of the bike trail and back. His average speed the first half of the ride was 2mph faster than his speed on the second half...
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, then
r, travel rate for second half
r+2, travel rate for first half


{{{15/(r+2)+15/r}}}-----travel time expression, total
Simplify this.




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(Fraction Arithmetic Skills)
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