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.

[EX 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 ?
[EX A]: 54

[EX Q]: Bianca had 45 coloring books . If she gave away 6 of them , but then bought 20 more , how many would she have total ?
[EX A]: 59

[EX Q]: As Alyssa was searching through her couch cushions , she found 12 quarters , and 7 pennies in the couch . How much money in total does Alyssa have ?
[EX A]:
3.07