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zalmon walks 3/4 of a mile in 3/10 of an hour. What is his speed in miles per hour?
first change 3/10 of an hour to minutes 3/10 x 60= 18 minutes also change 3/4 to .75 to eliminate the fraction ratio and proportion .75 mi/18 minutes= x miles/60 minutes cross multiply 18x=45 x=2.5 miles per hour
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