Question

Solve by writing and solving an equation: Your cousin buys a CD for 14.99 in a state where the tax rate is 4.5%. If she paid with a $20 bill how much change will she receive? Solve by writing and solving an equation: Your cousin buys a CD for 14.99 in a state where the tax rate is 4.5%. If she paid with a $20 bill how much change will she receive? @Mathematics

Answer 1

Whether you're dealing with a price increase such as tax or a discount, set it up like this:

price * (1 + %) if it's a price increase or price * (1-%) is it's a decrease. In this situation, you use that formula and then subtract that result from the $20 given.

Answer 2

14.99 x 1.045 = 15.6645
20 - 15.6645 = 4.3355
4.34 is the change