Each chicken lays 7 * 3 = 21 eggs a week. Each week all the chickens lay 21 * 8 = 168 eggs. In 4 weeks all the chickens lay 168 * 4 = 672 eggs. 672 eggs equal 672 / 12 = 56 dozens. Kelly would make 56 * 5 = 280 dollars.
The answer: 280
Reverse engineering the question: Kelly has 8 chickens that lay 3 eggs each per day. If Kelly sells these eggs for $5 a dozen. How much money will she make in 4 weeks if she sells all her eggs?
Reasoning and answer: Elizabeth spends 6 * 2 = 12 dollars on pens. Elizabeth has 20 - 12 = 8 dollars to spend on pencils. Elizabeth can buy 8 / 1.6 = 5 pencils.
The answer: 5
What was the question?
Question: Elizabeth has 20 dollars and wants to buy pens and pencils. Each pencil costs $1.60 and each pen cost 2 dollars. How many pencils can she buy with her 20 dollars if she wants 6 pens?
First, add the 4 plants Mark gave away to the 20 he has left: 4 + 20 = 24. Then divide this number by 2 to find how many plants Mark had after two months: 24 / 2 = 12. Then divide that number by 2 to find how many plants Mark had after one month: 12 / 2 = 6. Finally, divide that number by 2 to find out how many plants Mark initially planted: 6 / 2 = 3.
The answer: 3
Reverse engineering the question: Mark plants some strawberries in his backyard. Every month, the number of strawberry plants doubles. After 3 months, Mark digs up 4 strawberry plants and gives them to his friend. If he still has 20 strawberry plants, how many did he initially plant?
Reasoning and answer: There were 4 * 5 = 20 trees to clean. So it took 20 * 6 = 120 minutes. That is 120 / 60 = 2 hours. So he spent 2 / 2 = 1 hour cleaning.
The answer: 1
What was the question?
Question: Jack has a grove with 4 trees by 5 trees. It takes 6 minutes to clean each tree. He gets help to clean the trees so it only takes half as long. How many hours did he spend cleaning trees?
If Joanie wants 3 cups, Mitchell wants 4 cups, Miles & Davis want 6 cups and Cliff wants 3 cups then they want 3 + 4 + 6 + 3 = 16 cups of popcorn. Every 2 tablespoons makes 4 cups and they want 16 cups so 16 / 4 = 4 groups of 2 tablespoons are needed. Thus they need 4 * 2 = 8 tablespoons in total.
The answer: 8
Reverse engineering the question: 2 tablespoons of popcorn kernels will make 4 cups of popcorn. For movie night, Joanie wants 3 cups of popcorn, Mitchell wants 4 cups of popcorn, Miles and Davis said they would split 6 cups of popcorn and Cliff said he would only eat 3 cups. How many tablespoons of popcorn kernels will they need?
24 gallons in minus 4 gallons out is 24 - 4 = 20 gallons per second. 260 gallons divided by 20 gallons per second 260 / 20 = 13 seconds.
The answer: 13
Reverse engineering the question:
24 gallons per second of water flows down a waterfall. If you have an empty basin that can hold 260 gallons of water. The basin leaks water at 4 gallons per second. how long would it take to fill the basin with water from the waterfall in seconds?