So here's information before I say the question The sale was 50 percent off. And the sales price was 21 dollars

It is asking "what was the original price of a bookcase whose sale price is $21?"

What you have to do is multiply 21 by 2. it is 42. $42 dollars was the original price of the bookcase.

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

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