SOLUTION: Henry runs 3 miles in 28 minutes. At the same rate, how many miles would he run in 42 minutes?

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Question 969841: Henry runs
3
miles in
28
minutes. At the same rate, how many miles would he run in
42
minutes?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
This is a proportion problem.
(3/28) =( x/42)
Cross-multiply: 42*3=28*x
126=28*x
x=(126/28) =4.5 miles
This works, because 42 minutes is half again of 28 (28+14).
Four and a half miles is half again of 3 (3+1.5). This is another way to do it.