SOLUTION: Lita Vance is driving to Lake Tahoe a distance of 662 miles. If she drices at 55 mph. for 5 hours, at what speed must she drive to complete the total trip in 14 hours?

Question 154523: Lita Vance is driving to Lake Tahoe a distance of 662 miles. If she drices at 55 mph. for 5 hours, at what speed must she drive to complete the total trip in 14 hours?
Answer by BrittanyM(80) (Show Source): You can put this solution on YOUR website!
She has already driven for five hours, so the remaining distance of her trip must be completed in nine hours.

To find this, we can subtract the distance that she has already travelled from the total distance of the trip:

55mph * 5hrs = 275miles
And the total distance is 662miles, so:
662mi - 275mi = 387

We know that she wants to make the trip in a total of fourteen hours, but she has already used five hours. So there are nine hours heft for her to complete 387 miles.

Her speed for the remainder of the trip must be 43mph.
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