Reasoning and answer: The second dog eats 26 pounds a week because 13 x 2 = 26. In total they eat 45 pounds because 3 x 15 = 45. The third dog eats 6 pounds a week because 45 - 13 - 26 = 6.
The answer: 6
What was the question?
Question: Arthur has 3 dogs. They eat an average of 15 pounds of food a week. One dog eats 13 pounds a week. The second eats double this. How much does the third dog eat a week?


Norma left 9 T - shirts And twice as many sweaters, she took 9 * 2 = 18 sweaters. Adding the T - shirts and sweaters, Norma left 9 + 18 = 27 clothes. When she came back, she found 3 sweaters And triple the number of T - shirts, she found 3 * 3 = 9 T - shirts. Adding the T - shirts and sweaters, Norma found 3 + 9 = 12 clothes. Subtracting the clothes she left from the clothes she found, 27 - 12 = 15 clothes are missing.
The answer: 15
Reverse engineering the question: Norma takes her clothes to the laundry. She leaves 9 T-shirts and twice as many sweaters as T-shirts in the washer. When she returns she finds 3 sweaters and triple the number of T-shirts. How many items are missing?


Reasoning and answer: The total amount of money saved is $27 + $13 + $28 = $68. The total cost of the two products is $49 + $5 = $54. Kate has $68 − $54 = $14 left.
The answer: 14
What was the question?
Question: Kate saved $27 in March. She saved $13 in April and $28 in May. Then Kate spent $49 on a keyboard and $5 on a mouse. How much money does Kate have left?


Samantha, Aira, and Joe have 6 x 3 = 18 rubber bands altogether. If we let x be the number of bands that Aira had, then Samantha had x + 5. Since Aira had 1 fewer band than Joe, then Joe had x + 1. Since the total number of bands is 18, then the equation is x + (x + 5) + (x + 1) = 18. By simplifying the left side of the equation, we have 3x + 6 = 18. Putting all the constant terms on the right side gives 3x = 12. So the value of x is 12 / 3 = 4. Hence, Aira had 4 rubber bands.
The answer: 4
Reverse engineering the question: Samantha, Aira, and Joe received 6 rubber bands each after they divided their bands equally. If Samantha had 5 more bands than Aira and Aira had 1 fewer band than Joe, how many rubber bands did Aira have?


Reasoning and answer: There are a total of 14 apples / box x 3 boxes = 42 apples in the 3 boxes. So, Henry and his brother each have 42 apples / 2 people = 21 apples / person to consume. Since there are 7 days in a week, thus, both of them can consume the 3 boxes of apples in 21 / 7 = 3 weeks.
The answer: 3
What was the question?
Question: Henry believes in the famous phrase, "An apple a day, keeps the doctor away." If a box contains 14 apples, how many weeks can Henry and his brother spend eating 3 boxes of apples if they each eat 1 apple a day?


Reasoning and answer: The sell reduced the price of each pin by 20 * .15 = $3. So he paid 20 - 3 = $17 per pin. So the total cost was 17 * 10 = $170.
The answer: 170
What was the question?
Question:
John decided to buy 10 pins for himself. They are normally $20 each but they were on sale for 15% off. How much did he spend on pins?