Question: Missy had a giant piggy bank in her bedroom. Every day she would search the house for change to put in her bank. After 4 years, the bank was opened and it contained $450 in change. If the second, third, and fourth-year she doubled the amount of money she put in the bank from the amount she had put in the previous year, how much money, in dollars, did she put in the bank the first year?
Answer: Step-by-step reasoning process: We let x be the amount of money she put in the bank the first year,. Then the second year was 2 * x,. and the third year was 2 * 2 * x = 4 * x,. and the fourth year was 2 * 2 * 2 * x = 8 * x. And the total amount she put in the bank, $450, is the sum of all four years, or $450 = x + (2 * x) + (4 * x) + (8 * x). This simplifies to $450 = 15 * x. And therefore, the amount of money she put in the bank the first year was x = $30.
So the answer is 30.

Question: John takes a pill every 6 hours. How many pills does he take a week?
Answer: Step-by-step reasoning process: He takes 24 / 6 = 4 pills a day. So he takes 4 * 7 = 28 pills a week.
So the answer is 28.

Question: A pet shop has 2 puppies and some kittens. A puppy costs $20, and a kitten costs $15. If the stock is worth $100, how many kittens does the pet shop have?
Answer: Step-by-step reasoning process: The 2 puppies cost 2 * 20 = 40 dollars. The stock is worth 100 dollars, meaning that the kittens cost 100 - 40 = 60 dollars. Since the cost of a kitten is 15 dollars, the pet shop has 60 / 15 = 4 kittens.
So the answer is 4.

Question: Anna has 3 times as many toys as Mandy and 2 fewer toys than Amanda. If they have 142 toys all together, how many toys does Mandy have?
Answer:
Step-by-step reasoning process: Let x be the number of toys Mandy has. Anna has 3 * x toys. Amanda has 3 * x + 2 toys. x + 3 * x + 3 * x + 2 = 142. 7 * x + 2 = 142. 7 * x = 140. x = 20.
So the answer is 20.