Concept explainers
Match the option which represent the situation.
Answer to Problem 57PFA
Option C is correct.
Explanation of Solution
Given:
At the school store, Raul bought 4 note books and 2 pens. Helen bought 5 notebooks. If Helen spent at least as much as Raul, which statement about the cost of notebooks and pens is true?
Options are:
A: If pens cost $1.50, then notebooks must cost at least $5
B: If pens cost $1.50, then notebooks must cost more than $5
C: If pens cost $2.50, then notebooks must cost at least $5
D: If pens cost $2.50, then notebooks must cost no more than $5.
Concept Used:
Let the cost of notebook is $N and the cost of 1 pen = $P
Raul bought 4 note books and 2 pens. Total cost: $(4N+2P)
Helen bought 5 notebooks. Total cost $ 5N.
Condition given: Helen spent at least as much as Raul
This means Raul`s spend
Inequality:
Calculation:
Inequality:
Solve:
This means cost of 2 pens at least cost of 1 notebook.
C: If pens cost $2.50, then notebooks must cost at least $5
Option C is correct.
Thus, option C is correct.
Chapter 5 Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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