Purchasing a tv that is 20% off will save $180.
a. name the different parts with the words: part, whole, percent.
20% off
$180
original price
b. what was the original price of the tv? show two methods for finding your answer.

The unit price is 0.99

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.