To find: A variable for the indicated number and write an inequality based on the given information.
Answer to Problem 12WE
The inequality is
Explanation of Solution
Given:
If a motorist drove 10 mi/h faster, then he would travel farther in 3 h than he does in 4 h at his present speed.
Calculation:
Let s be the present speed of the motorist.
Then, the distance travelled in 4 hours is
If the speed is increase by 10 mi/h, the distance travelled in 3 hours is
Since the distance travelled at the faster speed is farther than the distance travelled at the present speed, the inequality becomes
Chapter 10 Solutions
Algebra: Structure And Method, Book 1
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