SOLUTION: After a 80 % reduction, you purchase a new sofa on sale for ​$100. What was the original price of the sofa?

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Question 1064982: After a 80 % reduction, you purchase a new sofa on sale for ​$100. What was the original price of the sofa?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
100%-80%=20%
Let n be the original price. Then:
.20n=100
n=$500 as the original price of the sofa. ☺☺☺☺