Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

[Q]: a chef served 3 different foods for a banquet : 25 plates lobster rolls 14 plates of spicy hot noodles and 16 plates of seafood noodles . how many plates of food did the chef make altogether ?
[A]: 55

[Q]: for gwen 's birthday she received 5 dollars . if she spent 3 dollars . how much money did she still have ?
[A]: 2

[Q]: there were 46 passengers on the bus . 19 passengers got off at the first stop . 15 passengers got off at the second stop . how many passengers were left on the bus ?
[A]:
12