Question: Mr. Dubois buys a new car for $13,380. He pays $5,400 and pays the rest by giving $420 a month. In how many months will the car be fully paid for?
Answer: Step-by-step reasoning process: Dubois has to pay $13,380 $5,400 = $7,980 more. He will pay that in $7,980 : $420 = 19 months.
So the answer is 19.

Question: Bobby has three squares of fabric that he will turn into a flag. The first square is 8 feet by 5 feet. The second one is 10 feet by 7 feet. The third one is 5 feet by 5 feet. If he wants his flag to be 15 feet long, how tall will it be?
Answer: Step-by-step reasoning process: The first square is 40 square feet because 8 x 5 = 40. The second square is 70 feet because 10 x 7 = 70. The third square is 25 feet because 5 x 5 = 25. The total square footage is 135 feet because 40 + 70 + 25 = 135. The flag will be 9 feet tall because 135 / 15 = 9.
So the answer is 9.

Question: Elsa started the day with 40 marbles. At breakfast, she lost 3 marbles while playing. At lunchtime, she gave her best friend Susie 5 marbles. In the afternoon, Elsa's mom bought her a new bag with 12 marbles. Susie came back and gave Elsa twice as many marbles as she received at lunch. How many marbles did Elsa end the day with?
Answer: Step-by-step reasoning process: Elsa had 40 marbles - 3 - 5 = 32 marbles. Elsa then gained 12 marbles + 32 = 44 marbles. At dinner Elsa received 2 * 5 marbles from Susie = 10 marbles. In total Elsa had 44 marbles + 10 = 54 marbles.
So the answer is 54.

Question: James decides to replace his car. He sold his $20,000 car for 80% of its value and then was able to haggle to buy a $30,000 sticker price car for 90% of its value. How much was he out of pocket?
Answer:
Step-by-step reasoning process: He sold his car for 20000 * .8 = $16,000. He bought the new car for 30,000 * .9 = $27,000. That means he was out of pocket 27,000 - 16,000 = $11,000.
So the answer is 11000.