A cyclist rides from DeKalb to Rockford, a distance of 80 miles. His return trip takes 2 hours longer because his speed decreases by 20 miles per hour. How fast does he ride each way?
?
speed from DeKalb to Rockford: __________ mph
?
speed returning: __________ mph

What will be an ideal response?

20;  40

Mathematics

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A.
B.
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