SOLUTION: PLEASE HELP!! John drives at an average speed of 50 miles per hour for the first 4 hours of the 608-mile trip to Springfield. Ethel then drives the remaining distance in 8 hours. W

Question 125488: PLEASE HELP!! John drives at an average speed of 50 miles per hour for the first 4 hours of the 608-mile trip to Springfield. Ethel then drives the remaining distance in 8 hours. What is Ethel's average driving speed?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
If John drives at 50 mph for 4 hours, he will have travelled 200 miles.

That means that Ethel must have driven miles.

Since , we can say that .

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