Question 1056888
Susan is trying to get to her grandma's house 5 mile away. To get there she runs at a pace of 6 miles per hour for 30 minutes. She then walks at a pace of 4 miles per hour for the rest of the distance. How many minutes does she walk? 
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Run DATA:
rate = 6 mph ; time = 1/2 hr ; distance = r*t = 6(1/2) = 3 miles
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Walk DATA:
rate = 4 mph ; distance = 5-3 = 2 miles ; time = d/r = 2/4 = 1/2 hr
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Ans: She walks for 1/2 hr = 30 minutes
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Cheers,
Stan H.
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