SOLUTION: Fred and Desi left Steamtown Mall at 9:00 am and began walking in opposite directions. At 1:00 pm that same day they were 20 miles apart. If Fred walks 0.5 mph slower than Desi, wh
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Question 284297: Fred and Desi left Steamtown Mall at 9:00 am and began walking in opposite directions. At 1:00 pm that same day they were 20 miles apart. If Fred walks 0.5 mph slower than Desi, what is Desi’s speed of walking?
A. 2.25 mph B. 2.75 mph C. 3.5 mph D. 5 mph E. None of these. Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! let desi's speed be x mph
Fred's speed = x-0.5mph
In 5 hours desi has walked 5x miles
In 5 hours fred has walked 5(x-0.5) miles = 5x-2.5
5x+5x-2.5 = 20
10x=17.5
x=7.5 mph Desi's speed
Fred's speed will be 7 mph
