Use proportional relationships to solve the following problem. Riley needs to earn enough money to purchase a new jacket. The one he likes best is $49.99. His state sales tax is 7.25%. How much money does he need to earn? Round to the nearest dollar.

A. $50
B. $82
C. $54
D. $3.62

1 answer

To find out how much money Riley needs to earn, we can set up a proportional relationship between the cost of the jacket and the total amount he needs to earn after including sales tax.

Let x be the total amount Riley needs to earn.

$49.99 (cost of the jacket) + 7.25% sales tax = x

0.0725 * $49.99 = $3.62 (sales tax)

$49.99 + $3.62 = $53.61

Rounded to the nearest dollar, Riley needs to earn approximately $54. Therefore, the correct answer is C. $54.