Reasoning and answer: Let x be the number of books in Susan's collection. The collection of both Susan and Lidia would then be 4 * x + x = 3000. 5 * x = 3000. x = 600.
The answer: 600
What was the question?
Question: Lidia has a collection of books. Her collection is four times bigger than the collection which her friend Susan has. In total Susan and Lidia, both have 3000 books. How many books does Susan have in her collection?
She pulled out 55 + 101 + 78 = 234. 6 carrots weigh one pound so 234 / 6 = 39 pounds of carrots.
The answer: 39
Reverse engineering the question: It was time for Kelly to harvest her carrots that she had planted in three different beds. In the first bed she pulled out 55 carrots. In the second bed she pulled out 101 carrots and in the third bed she pulled out 78 carrots. She found that 6 carrots weighed one pound. How many pounds of carrots did Kelly harvest?
Reasoning and answer: Mrs. Thomson spent $240 x 1 / 3 = $80 on food. She spent $240 x 1 / 5 = $48 on clothes. So she spent a total of $80 + $48 = $128 on food and clothes. Hence, she had $240 - $128 = $112 left after buying food and clothes. Then, Mrs. Thomson saved $112 x 3 / 4 = $84.
The answer: 84
What was the question?
Question: Mrs. Thomson received an incentive worth $240. She spent 1/3 of the money on food and 1/5 of it on clothes. Then, she put in her savings account 3/4 of the remaining money. How much money did Mrs. Thomson save?
He bought all the toys for 20 * 200 = $4000. He sold 200 * .8 = 160 toys. He made 160 * 30 = $4800 from selling them. So he profits 4800 - 4000 = $800 profit.
The answer: 800
Reverse engineering the question: James decides to sell 80% of his toys. He bought them for $20 each and sells them for $30 each. If he had 200 toys how much more money did he have compared to before he bought them?
Reasoning and answer: The total number of apples delivered was 42 12 = 504. There are 504 - 4 = 500 apples were left remaining. Finally, there are 500 10 = 50 boxes of apples.
The answer: 50
What was the question?
Question: There are 42 apples in a crate. 12 crates of apples were delivered to a factory. 4 apples were rotten and had to be thrown away. The remaining apples were packed into boxes that could fit 10 apples each. How many boxes of apples were there?
Reasoning and answer: First find the cost of two slices of bread: $0.15 / slice * 2 slices = $0.30. Then add the cost of one slice each of ham and cheese: $0.30 + $0.25 + $0.35 = $0.90.
The answer: 90
What was the question?
Question:
Joe sells ham and cheese sandwiches for $1.50. If a slice of bread costs $0.15, a slice of ham costs $0.25 and a slice of cheese costs $0.35, how many cents does a sandwich with one slice of each protein cost Joe to make?