Riley is saving up to buy a new television. She needs a total of $1,048.16. Riley has saved $200.96 already and earns $84.72 per week at her job. How many weeks does Riley need to work to save enough money to buy the new television?
A.
8
B.
10
C.
9
D.
11
C. 9
To find the number of weeks Riley needs to work to save enough money, we can set up and solve the following equation:
200.96 + 84.72w = 1048.16
Subtract 200.96 from both sides:
84.72w = 1048.16 - 200.96
84.72w = 847.2
Divide by 84.72 to solve for w:
w = 847.2 / 84.72
w = 9
Therefore, Riley needs to work for 9 weeks to save enough money to buy the new television.