A pie shop charges $3 per slice of custard pie. They cut each whole pie into 10 slices. If they make 6 whole custard pies, how much money will the pie shop earn? Give the rationale and then the answer.
Let's think step by step. The pie shop has 6 x 10 = 60 slices of custard pie. Therefore, the pie shop will earn $3 x 60 = $180 for the 60 slices of custard pie.. The answer is: 180.

Sandi had $600. She spent half of it at a farmer’s market. Gillian spent $150 more than three times Sandi's total. What is the total that Gillian spent at the farmer’s market? Give the rationale and then the answer.
Let's think step by step. Sandi spent 600 / 2 = 300 dollars at the farmer’s market. Gillian spent 300 * 3 + 150 = 1050 dollars at the farmer’s market.. The answer is: 1050.

Porche has 3 hours to get all her homework done. Her math homework takes her 45 minutes. Her English homework takes her 30 minutes. Her science homework takes her 50 minutes. Her history homework takes her 25 minutes. She also has a special project due the next day. How much time does she have left to get that project done? Give the rationale and then the answer.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Let's think step by step. She has 180 minutes to do work because 3 times 60 equals 180. She has already spent 150 minutes on homework because 45 plus 30 plus 50 plus 25 equals 150. She has 30 minutes to finish her project because 180 minus 150 equals 30.. The answer is: 30.