Question: 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 $200 of chemicals.  How much does his pool cost a month? Is final answer 1950?
Answer: He gets his pool cleaned 30/3=<<30/3=10>>10 times a month
Each time he gets it cleaned he tips 150*.1=$<<150*.1=15>>15
So he pays 150+15=$<<150+15=165>>165
So he pays 165*10=$<<165*10=1650>>1650 a month on cleaning
The chemicals cost 200*2=$<<200*2=400>>400
So in total, he pays 1650+400=$<<1650+400=2050>>2050
#### 2050