SOLUTION: david runs 4 miles in 30 minutes. At the same rate, how many would he run in 18 minutes?

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Question 318570: david runs 4 miles in 30 minutes. At the same rate, how many would he run in 18 minutes?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Set up a ratio.
4 miles is to 30 minutes as X miles is to 18 minutes.
4%2F30=X%2F18
X=%284%2818%29%29%2F30
X=12%2F5
.
.
.
2 minutes, 24 seconds