Aradio is being discounted 20%. if the sale price is $51.44, what was the original price of the radio? a. $12.86, b. 64.30, c. $41.15, d. 65.05

The equation for decreasing a price by 20% is 
original price x 0.8 = sale price

Here, we can fill in the sale price so
original price x 0.8 = 51.44

This can be rearranged to show:
51.44 ÷ 0.8 = original price

So the original price was $64.30

Answer = B - $64.30

The last answer choice