You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: Kylie was collecting coins . She got 15 coins from her piggy bank and 13 coins from her brother . Her father gave Kylie 8 coins . Kylie gave 21 of the coins to her friend Laura . How many coins did Kylie have left ?
[EX A]: 15

[EX Q]: If Bob can make 100 feet of rope in 2 hours and Tim can make 75 feet of rope in 2 hours , how many feet of rope can Bob and Tim working together make in 4 hours ?
[EX A]: 350

[EX Q]: Dave was working as a sacker at a grocery store where he made 6 dollars an hour . On Monday he worked 6 hours and on Tuesday he worked 2 hours . How much money did Dave make in those two days ?
[EX A]:
48