Zainab earns $2 an hour passing out flyers at the town square. She passes out flyers on Monday, Wednesday, and Saturday each week, for 4 hours at a time. After passing out flyers for 4 weeks, how much money will Zainab earn? Give the rationale and then the answer.
Let's think step by step. Every day Zainab passes out flyers, she earns $2 x 4 = $8. If she hands out flyers for 3 days, she'll earn $8 / day * 3 days = $24. If she passes out flyers for 4 weeks, she will earn $24 * 4 = $96.. The answer is: 96.

Isabella is twice as old as Antonio. In 18 months, she will be 10 years old. How many months old is Antonio? Give the rationale and then the answer.
Let's think step by step. First, we determine that Isabella will be 10 * 12 = 120 months old at age 10, to find a number to compare her age to Antonio's with. Then we subtract the 18 months from the total of 120 months to find 120 - 18 = 102 months, which is the age Isabella is currently. Since at 102 months old Isabella is twice as old as Antonio, we take 102 / 2 = 51 months as Antonio's age.. The answer is: 51.

Niles is collecting his book club's annual fees. Each of the six members pays $150/year towards snacks, plus $30 each for six hardcover books and $12 each for six paperback books. How much money does Niles collect in total? Give the rationale and then the answer.
Let's think step by step. First find the cost per member of the hardcover books: $30 / book * 6 books = $180. Then find the cost per member of the paperback books: $12 / book * 6 books = $72. Then find the total cost per member: $180 + $72 + $150 = $402 / member. Now find the total amount of money by multiplying the cost per member by the number of members: $402 / member * 6 members = $2412.. The answer is: 2412.