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]: Oscar 's bus ride to school is 0.75 mile and Charlie 's bus ride is 0.25 mile . How much longer is Oscar 's bus ride than Charlie 's ?
[A]: 0.5

[Q]: If Lawrence walked 4 kilometers at 3 kilometers per hour , how long was Lawrence walking ?
[A]: 1

[Q]: For Halloween Megan received 11 pieces of candy from neighbors and 5 pieces from her older sister . If she only ate 8 pieces a day , how long would the candy last her ?
[A]:
2