Question: I would love to understand how to solve this problem: Mark buys a fleet of 12 cars for his company.  Each car sells for $20,000.  He pays 10% tax on the cars and then another $1000 for registration on each of them.  How much does he pay for everything?
Can you explain?
Answer: 
The cars cost 20000*12=$240,000
So the tax came out to 240,000*.1=$24,000
So the cars cost 240,000+24,000=$264,000
Registration cost another 12*1000=12,000
So his total cost is 264,000+12,000=$276,000