Concept explainers
Find the number of hours she will take to drive 440 miles.
Answer to Problem 19CCSR
8 hours
Explanation of Solution
Given:
Sandra takes 6 hours to drive 300 miles. If she increases her speed by 5 mi/ hr, how many hours will she take to drive 440 miles?
Concept Used:
We know that
Calculation:
Sandra takes 6 hours to drive 300 miles.
Sandra increases her speed by 5 mi/ hr, so the new speed is
Distance = 440 miles.
Thus, Sandra will take 8 hours to cover 440 miles with a speed 55 miles/hour.
Chapter 11 Solutions
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