Answer:
$100
Step-by-step explanation:
1.
Remember how 20% is equal to 1/5?
2.
$80 is equal to 4/5 of the origanal price (1/5 being the 20% we took off of it)
3. With that in mind, we could easily find 20% of the origanal price.
4. So we fallow the equation 4/5 ÷ 4
also equal to 80 ÷ 4
5. 80 ÷ 4 is 20
6. now add 20 to 80 to make 100
(100 being 100% and the 20% was added to find the original price)
