A portable music player is on sale for 20% off its original price. The sale price is $96.

What was the original price of the music player?

We know that the sale price is $96 which is 80% (because 100% - 20% = 80%) of x, so we can write it down as:

96 = 80% from x

96 = 80/100 * x

96 = 8/10x

96 = 4/5x / * 5 (both sides)

480 = 4x / : 4 (both sides)

x = 120

Doublecheck:

120 * 80% =

= 120 * 80/100 =

= 120 * 4/5 =

= 480/5 =

= 96

So it's correct; )

Answer: The original price was $120.