Sahil is buying a graphing calculator at the store where he
works. The calculator is on sale for
10% off of the regular price. Sahil
gets an additional 10% employee
discount and he has a $20 gift he
can use towards his purchase. If
the cost of the calculator is $52.90,
before taxes, what was the original
price of the calculator?

A.$95
B.$90
C.$89
D.$88