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

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Question 963206: Mary runs
3
miles in
28
minutes. At the same rate, how many miles would she run in
42
minutes?
Answer by LinnW(1048) About Me  (Show Source):
You can put this solution on YOUR website!
%28+3+miles+%29%2F%28+28+minutes+%29 = %28x+miles%29%2F%28+42+minutes+%29
do cross products
28x = 3*42
28x = 126
divide each side by 28
x = 126/28
x = 4.5 miles