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]: Jason has 43 blue and 16 red marbles . Tom has 24 blue marbles . How many blue marbles do they have in all ?
[EX A]: 67

[EX Q]: During a school play , Jonah staffed the snack bar . He served 0.25 pitcher of lemonade during the first intermission , 0.4166666666666667 pitcher during the second , and 0.25 pitcher during the third . How many pitchers of lemonade did Jonah pour in all ?
[EX A]: 0.9166666666666666

[EX Q]: Faye had 46 math problems and 9 science problems for homework . If she finished 40 of the problems at school , how many problems did she have to do for homework ?
[EX A]:
15