SOLUTION: Jana ran the first 3 1/2 of a 5-mile race in 1/3. What is her average rate in miles per hour for the first part of the race and how do I solve the problem??
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Question 961399: Jana ran the first 3 1/2 of a 5-mile race in 1/3. What is her average rate in miles per hour for the first part of the race and how do I solve the problem??
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
[ distance ] = [ rate ] x [ time ]
Divide both sides by
---------------
given:
-----------------
Note that:
,
so, I can say:
Multiply the top and bottom of this fraction by
The first part of the race was run at a rate of:
10 and 1/2 miles/hour
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