Answer:
Both cases will give the same price
Step-by-step explanation:
The total purchase that Joshua do will be:
2* $10.98 + 1 * $11.50 + 2* $15.99 = $65.44
Let's compare the price for both scenario
1. If the tax added before discount
taxed price $65.44 * (100+6.5)% =$69.6936
discounted price= $69.6936* (100-20)%= $55.75488
2. If the tax added after the discount
discounted price= $65.44 * (100-20)%= $52.352
taxed price $52.352 * (100+6.5%) = 55.75488
Both prices will be the same since the operation in this calculation is only multiplication.