Wilfred eats 4 carrots on Tuesday and 6 carrots on Wednesday. If Wilfred wants to eat a total of 15 carrots from Tuesday to Thursday, how many carrots does Wilfred need to eat on Thursday? Give the rationale and then the answer.
Let's think step by step. Across Tuesday and Wednesday, Wilfred eats 4 + 6 = 10 carrots. On Thursday, Wilfred needs to eat 15 - 10 = 5 carrots.. The answer is: 5.

During a commercial break in the Super Bowl, there were three 5-minute commercials and eleven 2-minute commercials. How many minutes was the commercial break? Give the rationale and then the answer.
Let's think step by step. The 5 - minute commercials were 3 * 5 = 15 minutes in total. The 2 - minute commercials were 2 * 11 - 22 minutes in total. The commercial break was 15 + 22 = 37 minutes long.. The answer is: 37.

John gets his pool cleaned every 3 days. It cost $150 each time and he gives the guy a 10% tip each time he comes to clean. Then twice a month he needs to use $200 of chemicals. How much does his pool cost a month? Give the rationale and then the answer.
Let's think step by step. He gets his pool cleaned 30 / 3 = 10 times a month. Each time he gets it cleaned he tips 150 * .1 = $15. So he pays 150 + 15 = $165. So he pays 165 * 10 = $1650 a month on cleaning. The chemicals cost 200 * 2 = $400. So in total, he pays 1650 + 400 = $2050.. The answer is: 2050.