First, you have to add the number of students that liked the three other fruits. Therefore, you have to add 70 + 120 + 147. This gives you a sum of 337. We know that 450 students were interviewed, so you have to subtract 337 from 450 to get the number of students who liked strawberries. 450 - 337 = 113 students liked strawberries best out of all of the fruits.
The answer: 113
Reverse engineering the question: Sarah interviewed 450 students at her school and asked them which fruit they liked best - oranges, apples, pears or strawberries. 70 students said they liked oranges, 120 students said they liked pears, and 147 students said they liked apples. How many students picked strawberries as their favorite fruit from the list?


Reasoning and answer: For each class, he has to review the questions of 35 students, in total, he will review 10 * 35 = 350 questions. For the 5 classes, he will review a total of 350 * 5 = 1750 questions.
The answer: 1750
What was the question?
Question: After evaluating his students on the final exams. Professor Oscar reviews all 10 questions on each exam. How many questions must he review if he has 5 classes with 35 students each?


After 3 hours, the ants have removed 4 * 3 = 12 ounces of sugar. There are 24 - 12 = 12 ounces of sugar left. Thus, the ants need 12 / 4 = 3 more hours to harvest the remaining sugar.
The answer: 3
Reverse engineering the question: A swarm of ants discovered a pile of sugar that spilled from a dropped bag. They begin to harvest it and carry it off to their anthill. Every hour, the ants remove 4 ounces of sugar. The bag of sugar held 24 ounces before it was dropped. After three hours, how many more hours will the ants need to harvest the remaining sugar?


Reasoning and answer: There are 200 + 32 = 232 red apples. After the delivery there are 340 + 32 = 372 green apples. There are now 372 - 232 = 140 more green apples than red apples now.
The answer: 140
What was the question?
Question: There are 200 more red apples than green apples in a grocery store. A truck arrives and delivers another 340 green apples. If there were originally 32 green apples, how many more green apples than red apples are there in the store now?


Thor sold 200 / 10 = 20 stuffed animals. Jake sold 20 + 10 = 30 stuffed animals. Quincy sold 200 - 30 = 170 more stuffed animals than Jake.
The answer: 170
Reverse engineering the question: Jake sold 10 more stuffed animals than Thor. Quincy sold ten times as many stuffed animals as Thor. If Quincy sold 200 stuffed animals, how many more stuffed animals did Quincy sell than Jake?


If she invited 20 friends, then the number of friends who came with one more person is 1 / 2 * 20 = 10. If the 10 friends came with 10 more people, the total number of guests becomes 20 + 10 = 30 guests. If you add Ashley, the total number of people in the party is 30 + 1 = 31 people.
The answer: 31
Reverse engineering the question:
Ashley had a birthday party and invited 20 of her friends, telling them to each invite one more person to attend the party. If half the number of the invited guests each came with one more person, what's the total number of people at the party, including Ashley?