Okay. So for this question, we add 100% to the sales tax to include the sale price. 100% + 7% is 107%. Now, we multiply that amount by 48 to get the total amount. 48 * 107% (1.07) is 51.36. 51.36 > 50. The jeans cost $51.36, which costs more than what you have, so no. You can not afford the jeans.
