Question

You buy a shirt that is on sale for 30% off. You pay $22.40. Your friend wants to know the original price of the shirt. Whats the answer?

Answer 1

The price of the shirt is $22.40.
Since it is 30% off, you would need to add back on the 30%
22.40*100% is 22.40, So you would do 22.40*130% to bring back the thirty.
The answer is $29.12
To check the answer, you can do 29.12*70% because 100-30=70

Answer 2

30% off
theh shirt is 22.40 after discount
original=100%
 original-discount=22.40
100-30=70%
22.40=70%
percent means parts out of 100
22.40=70/100 of original
multiply both sides by 100/70 to clear fraction
2240/70=original
32=original


original=$32.00