Reasoning and answer: First convert the number of farthings Gerald has to pfennigs by dividing by the exchange rate: 54 farthings / 6 farthings / pfennig = 9 pfennigs. Then subtract the cost of the meat pie to find how many pfennigs Gerald has left: 9 pfennigs - 2 pfennigs = 7 pfennigs.
The answer: 7
What was the question?
Question: Gerald wants to buy a meat pie that costs 2 pfennigs. Gerald has 54 farthings, and there are 6 farthings to a pfennig. How many pfennigs will Gerald have left after buying the pie?


Let the number of square feet in Nada's house be y. 2y + 100 = 1000. 2y = 900. Meaning, y = 450 square feet.
The answer: 450
Reverse engineering the question: Sara’s house is 100 square feet larger than 2 times Nada's house. If Sara's house is 1000 square feet, how many square feet is Nada's house?


Reasoning and answer: Each hour contains 60 minutes, so after 2 hours he took 2 * 60 = 120 minutes. If each question takes two minutes, then he answered 120 / 2 = 60 questions. Unanswered questions is 100 - 60 = 40 questions.
The answer: 40
What was the question?
Question: Grayson has 100 questions on a test. He answers some of the questions for 2 hours, taking two minutes for each answer, then realizes he doesn't know the rest of the questions. How many questions does Grayson leave unanswered when he submits his test?


Tony got 3 degrees which each took 4 years, for 3 * 4 = 12 years spent. He then got his graduate degree, which was another 2 years added to the previous total, for 12 + 2 = 14 years in total.
The answer: 14
Reverse engineering the question: Tony decided he wanted to be an astronaut. He went to college for 4 years to get a degree in science. He then went on to get 2 more degrees in other fields for the same period of time. He also got a graduate degree in physics, which took another 2 years. How many years in total did Tony go to school to be an astronaut?


Reasoning and answer: His new car costs 1800 + 2000 = 3800 dollars. His old car cost 3800 / 2 = 1900 dollars.
The answer: 1900
What was the question?
Question: Ben's new car cost twice as much as his old car. He sold his old car for $1800 and used that to pay off some of the cost of his new car. He still owes another $2000 on his new car. How much did his old car cost, in dollars?


Reasoning and answer: Max finished history in 20 * 2 = 40 minutes. Finishing geography took the most time, which is 40 * 3 = 120 minutes. In total, for all three subjects, Max needed 20 + 40 + 120 = 180 minutes.
The answer: 180
What was the question?
Question:
Max was doing homework in three different subjects. It took him 20 minutes to finish tasks from biology and two times more time to finish history. Geography took him the most time, three times more than history. How much time did Max spend on doing his homework?