Reasoning and answer: Twice Viggo's younger brother's age when his brother was 2 is 2 * 2 = 4 years. If Viggo's age was 10 more than twice his younger brother's age when his brother was 2, Viggo was 10 + 4 = 14 years old. Viggo is 14 years - 2 years = 12 years older than his brother. Since Viggo's brother is currently 10 and Vigo is 12 years older, he's currently 10 + 12 = 22 years old. Their combined age is 22 years + 10 years = 32 years.
The answer: 32
What was the question?
Question: Viggo's age was 10 years more than twice his younger brother's age when his brother was 2. If his younger brother is currently 10 years old, what's the sum of theirs ages?


He does the long drive 7 - 4 = 3 days a week. So he drives a total of 4 * 50 + 3 * 100 = 500 miles a week. That means the car cost 500 * .1 = $50 just for the mileage per week. So he pays 100 + 50 = $150 per week for the car. That means the total cost of the car is 150 * 52 = $7800 a year.
The answer: 7800
Reverse engineering the question: Tom decides to lease a car. He drives 50 miles on Monday, Wednesday, and Friday, and Sunday for the rest of the days he drives 100 miles. He has to pay $.1 per mile he drives. He also has to pay a weekly fee of $100. How much does he have to pay in a year.


Reasoning and answer: Muscovies: 40(.50) = 20 Muscovy ducks. Female Muscovies:20(.30) = 6 ducks.
The answer: 6
What was the question?
Question: There are 40 ducks in a pond. 50 percent of the ducks are Muscovy and 30 percent of the Muscovies are female. How many female Muscovy ducks there?


On the first and second days, Nala found 5 + 7 = 12 seashells. On the third day, she found 12 x 2 = 24 seashells. Altogether, she found 12 + 24 = 36 seashells.
The answer: 36
Reverse engineering the question: Nala found 5 seashells at the beach. The next day, she found another 7, and the following day, she found twice the number she got from the first two days. How many seashells does Nala have?


Reasoning and answer: Merry's brother takes care of 10 + 3 = 13 lambs. So, together Merry and her brother have 10 + 13 = 23 lambs.
The answer: 23
What was the question?
Question: Merry is taking care of 10 lambs. Her brother takes care of 3 more lambs than Merry. How many lambs do Merry and her brother have?


Reasoning and answer: 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.
The answer: 30
What was the question?
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?