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 me reasons, before answering the question
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. So the final answer is 2050.