a.
To write and solve system of equation
a.
Answer to Problem 6.2.6P
Explanation of Solution
Given information:
4 notebooks and 5 pens bought
7 notebooks and 3 pens bought
Calculation:
Let cost of 1 notebook be x and cost of 1 pen be y
According to question
Taking (1)
Solving,
Dividing by 4,
(-3)
Put value of x in (2)
Solving,
So,
Dividing equation by -23,
Put y in (3)
Solving,
Hence, cost of pen is $1 and, cost of notebook is $2.5
b.
To verify Susan’s shopping
b.
Answer to Problem 6.2.6P
Yes, S has enough money.
Explanation of Solution
Given information:
Amount S has=$17
Number of notebook wanted to be bought= 5
Number of pen wanted to be bought= 4
Calculation:
Cost of pen =$1
Cost of notebook=$2.5
According to question,
Equation=
Put value of x and y,
Equation=
Solving,
=
Total cost of buying is $16.5
And S has $17.
Yes, S can buy the stuff
Chapter ISG Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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