
Concept explainers
To translate: the given sentence into an equation.

Answer to Problem 10PPS
The required equation is 4n + 21=85.
Explanation of Solution
Given:
E swan for 85 minutes.
This is 21 more minutes than 4 times the number of minutes Ethan swan.
Calculation:
Let the number of minutes S is n.
In the sentence ‘21 more minutes’ add 21 to something.
And ‘4 times the number’ is 4n.
Total minutes are 85.
The equation of the sentence, “E swam for 85 minutes. This is 21 more minutes than 4 times the number of minutes Ethan swam’ is as follows:
4n+21=85.
Hence, the required equation is 4n + 21=85.
Conclusion:
Hence, the required equation is 4n + 21=85.
Chapter 4 Solutions
Pre-Algebra, Student Edition
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