Let the number of chickens be c. If there are 150 ducks, we can describe the number of chickens as 150 = 10 + 4c. So, 4c = 150. And, there are c = 35 chickens. In total, Jen has 35 chickens + 150 ducks = 185 birds.
The answer: 185
Reverse engineering the question: Jen has 10 more ducks than four times the number of chickens. If Jen has 150 ducks, how many total birds does she have?


Reasoning and answer: The first trip will use 30 * 5 = 150 liters of fuel. The second trip will use 20 * 5 = 100 liters of fuel. The total liters of fuel are 150 + 100 = 250 liters.
The answer: 250
What was the question?
Question: John uses 5 liters of fuel per km to travel. How many liters of fuel should John plan to use if he plans to travel on two trips of 30 km and 20 km?


After inflating the 4 new balloons, she will have 2 red + 4 blue + 4 new = 10 total balloons. The probability of selecting red will be (2 red + 2 red newly inflated) / 10 total balloons = 40%.
The answer: 40
Reverse engineering the question: Kate has 2 red balloons and 4 blue balloons. Assuming she inflates 4 more balloons, two of each color red and blue, what is the percent likelihood that one selected at random will be red?


Reasoning and answer: The number of Greek yogurt packs that had expired is 40 / 100 * 80 = 32. If each pack of Greek yogurt was sold at $12, for the 32 packs of greek yogurt that he returned, Bob was refunded $12 * 32 = $384.
The answer: 384
What was the question?
Question: Bob ordered 80 packs of Greek yogurt from Costco to use for the month. However, when the delivery arrived, he realized 40% of the packs were expired. He decided to return those packs. If each pack was $12, how much was Bob refunded for the expired product?


At first Jeff paid, $300 / month x 12 months = $3,600 / year. He paid $3,600 / year x 3 years = $10,800 the firsts 3 years. The final 2 years he paid $350 / month x 12 months = $4,200 / year. He paid $4,200 / year x 2 years = $8,400 the last 2 years. He paid the owner $10,800 + $8,400 = $19,200 in total.
The answer: 19200
Reverse engineering the question: Jeff wanted to rent an apartment to live in for the next 5 years until he finishes his studies. He found a nice apartment next to his school, the owner asks Jeff to pay $300 each month, Jeff agreed, and for the first 3 years everything went fine, but then the owner wanted to raise the price for each month to $350. Jeff agreed again and continued paying until he graduated. How much did Jeff end up paying for the apartment throughout the 5 years?


If Calvin had scored 500 points and Paislee 3 / 4 times as many points as Calvin, Paislee had scored 3 / 4 * 500 = 375 points. To have a chance of tying the game, Paislee had to score 500 - 375 = 125 points.
The answer: 125
Reverse engineering the question:
Calvin and Paislee played a pool game where points were awarded for winning a round. If Calvin had scored 500 points and Paislee 3/4 times as many points as Calvin, how many points was Paislee required to achieve to have a chance of tying the game?