Concept explainers
To calculate: Solve using the five-step plan. Write out each step. A choice of possible numbers for one unknown is given.The ninth-grade class has 17 more girls than boys. There are 431 students in all. How many boys are there? How many girls are there? Choices for the number of boys: 191, 202, 207.
Answer to Problem 8P
The number of boys
Explanation of Solution
Given information:Ninth grade class has 17 more girls than boys and there are 431 students in total.
Calculation:
Step 1: Here we have two unknowns, girls and boys.
Step 2: Let
Step 3: As given, the strength of class is 431, so
Step 4: Choices for
True / False | ||
191 | False | |
202 | False | |
207 | True |
From above table we can say that number of boys
Step 5: Now we verify the answer
number of girls is17 more than boys
Total number of students are 431, so
Chapter 1 Solutions
Algebra: Structure And Method, Book 1
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