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]: A book store had 41 books in the bargin bin . If they sold 33 books , but then put 2 more in the bin , how many books would be in the bin ?
[A]: 10

[Q]: There were 39 girls and 4 boys trying out for the schools basketball team . If only 26 of them got called back , how many students did n't make the cut ?
[A]: 17

[Q]: At the town carnival Billy rode the ferris wheel 7 times and the bumper cars 3 times . If each ride cost 5 tickets , how many tickets did he use ?
[A]:
50