Reasoning and answer: At 5 cents a minute, calling his father cost Freddy 5 * 45 = 225 cents. At 25 cents a minute, calling his brother cost Freddy 25 * 31 = 775 cents. Adding the cost of calling his father and brother, we find that Freddy paid a total of 225 + 775 = 1000 cents. Since each dollar has 100 cents, Freddy paid 1000 / 100 = 10 dollars.
The answer: 10
What was the question?
Question: Freddy is calling his family on New Year's Eve. He calls his dad, who lives in the same city as him, and they talk for 45 minutes. Then he calls his brother, who lives on the other side of the world, and they talk for 31 minutes. Local calls cost 5 cents a minute, while international calls cost 25 cents a minute. How many dollars did Freddy spend calling his family on New Year's Eve?


Since each student needs 10 cups of water per day and there are 200 students, the custodian has to provide 200 * 10 = 2000 cups of water. A jug of water needs 40 cups to be full, so 2000 cups of water will fill 2000 / 40 = 50 jugs.
The answer: 50
Reverse engineering the question: A jug needs 40 cups of water to be full. A custodian at Truman Elementary School has to fill water jugs for 200 students, who drink 10 cups of water in a day. How many water jugs will the custodian fill with cups of water to provide the students with all the water they need in a day?


Reasoning and answer: The number of vets that recommend Puppy Kibble is 1000 * .2 = 200. The number of vets that recommend Yummy Dog Kibble is 1000 * .3 = 300 vets. Thus, 300 - 200 = 100 more vets recommend Yummy Dog Kibble than Puppy Kibble.
The answer: 100
What was the question?
Question: 20% of the vets in a state recommend Puppy Kibble. 30% recommend Yummy Dog Kibble. If there are 1000 vets in the state, how many more recommend Yummy Dog Kibble than Puppy Kibble?


The town had 684 people then had a 25% growth spurt increasing the population by 684 * .25 = 171 people. The town had 684 people then they added 171 people bringing the population to 684 + 171 = 855 people. There were 855 people and 40% moved away so it decreased by 855 * .40 = 342. The population was 855 and 342 people moved away making the new population 855 - 342 = 513 people.
The answer: 513
Reverse engineering the question: Youngsville had a population of 684 people. The town had a growth spurt and the population increased by 25% then they witnessed that 40% of the population moved away. What is the current population?


Reasoning and answer: The birds eat this many tomatoes: 21 / 3 = 7 tomatoes. There are this many tomatoes left on the plant: 21 - 7 = 14 tomatoes.
The answer: 14
What was the question?
Question: There are 21 cherry tomatoes on the tomato plant. 2 birds eat one-third of the tomatoes. How many are still left on the tomato plant?


Reasoning and answer: First find the total number of ounces in the water cooler: 3 gallons * 128 ounces / gallon = 384 ounces. Then find the total number of dixie cups Bill pours: 5 rows * 10 chairs / row = 50 chairs. Then find the total number ounces Bill pours: 50 attendees * 6 ounces / attendee = 300 ounces. Then subtract the amount of water Bill pours from the cooler from the initial amount to find the final amount: 384 ounces - 300 ounces = 84 ounces.
The answer: 84
What was the question?
Question:
While preparing for a meeting, Bill fills Dixie cups with water from out of a water cooler. The water cooler initially contains 3 gallons of water, and each Dixie cup holds 6 ounces of water. If Bill fills one cup of water per each meeting chair, and there are 5 rows of meeting chairs with 10 chairs in each row, then how many ounces of water will be left in the cooler after all cups have been are filled? (There are 128 ounces in a gallon.)