SOLUTION: 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

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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?
Found 2 solutions by ankor@dixie-net.com, stanbon:
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
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?
:
she ran for 1/2 hr; find how far; dist = speed * time
1%2F2 * 6 = 3 mi
The total dist is 5 mi, therefore she walked 2 mi; write a time equation
time = dist/speed
t = 2%2F4 = 1%2F2 hr which is 30 min walking

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
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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