Yolanda walks from her home to school at 4 miles per hour; she then rides her bike back home by the same route at c miles per hour. What is Yolanda’s average speed for the round trip?
1) The distance from Yolanda’s home to her school is 6 miles.
2) c = 10
Saturday, May 2, 2009
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avg speed = 8c/(4+c)
ReplyDeleteB is the ans