Answer:
$78.7092
Explanation:
He wants to buy a skateboard. The percentage value of the skateboard before any changes is 100%. So $73.56 = 100%. Now when you add a sales tax to it, the price will increase by 7% so it'll now be 107% right? You just have to find how much the 107% is equal to.
100% = 73.56
1% = 73.56÷100 = 0.7356
107 % = 0.7356 × 107 = 78.7092