You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Q: Olivia and her mom were picking carrots from their garden . Olivia picked 20 and her mother picked 14 . If only 19 of the carrots were good , how many bad carrots did they have ?

A: 15
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Q: Chloe was organizing her book case making sure each of the shelves had exactly 6 books on it . If she had 5 shelves of mystery books and 4 shelves of picture books , how many books did she have total ?

A: 54
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Q: If your gross pay is 450 dollars , while your net pay is 315 dollars , how much do you pay in taxes ? Assume that all tax dollars are not included in net pay .

A:
135
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