MATHEMATICS MIDDLE SCHOOL

ChitChat Wireless charges $0.30 per minute plus a monthly base fee. In September Maggie used 120 minutes and her bill was $51. Write and solve and equation to find the cost of Maggie uses 165 minutes in October.

Answers

Answer 1
Answer:

The total cost for the month of October will be $64.5

Step-by-step explanation:

Given,

September charges = $51

Minutes used = 120 minutes

Cost per minutes = $0.30

Cost of 120 minutes = 120*0.30 = $36

Let,

Monthly fee = x

Monthly fee + 120 minutes charges = 51

x+36=51

Subtracting 36 from both sides

x+36-36=51-36\nx=15

The company charges $15 monthly fee.

Minutes used in October = 165 minutes

Let,

y be the total cost for October.

Monthly fee + minutes*per minute charges = Total cost for October

x+165*0.30=y

15+49.5=y\n64.5=y\ny=\$64.5

The total cost for the month of October will be $64.5

Keywords: linear equation, subtraction

Learn more about subtraction at:

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