TASK DEFINITION: You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.
PROBLEM: Oscar's bus ride to school is 0.75 mile and Charlie's bus ride is 0.25mile. How much longer is Oscar's bus ride than Charlie's?

SOLUTION: 0.5

PROBLEM: There are 33 oak trees currently in the park. Park workers had to cutdown 18 oak trees that were damaged. How many oak trees will bein the park when the workers are finished?

SOLUTION: 15.0

PROBLEM: On her vacation last summer, Trisha walked all over New York City to buy souvenirs. First, she walked 0.12 mile from her hotel to a postcard shop. Then she walked 0.15 milefrom the postcard shop to a T-shirt shop and 0.63 mile from the T-shirt shop back to the hotel. How many miles didTrisha walk in all?

SOLUTION:
0.9