Safari National park has 1 / 2 * 100 = 50 snakes. Safari National park has 50 - 10 = 40 giraffes. Savanna National park has 100 * 2 = 200 lions. Savanna National park has 50 * 3 = 150 snakes. Savanna National park has 40 + 20 = 60 giraffes. Savanna National park has a total of 200 + 150 + 60 = 410 animals.
The answer: 410
Reverse engineering the question: Safari National park has 100 lions, half as many snakes, and 10 fewer giraffes than snakes. On the other hand, Savanna National park has double as many lions as Safari National park, triple as many snakes as Safari National park, and 20 more giraffes than Safari National park. How many animals in total does Savanna National park have?


Reasoning and answer: He has given out 120 tickets because 15 x 8 = 120. He has 16 days left to had out tickets because 31 - 15 = 16. He has to give out 80 more because 200 - 120 = 80. He has to give out 5 a day because 80 / 16 = 5.
The answer: 5
What was the question?
Question: Officer Hopps has to give out 200 tickets in May. The first 15 days he averages 8 tickets a day. How many does he have to average each day for the rest of the month to reach his required goal?


A single seed costs $.005 because .5 / 100 = .005. It costs $.02 cents to grow an ear of corn because .005 x 4 = .02. On each ear of corn he makes $.098 profit because .1 - .02 = .08. He sold 500 ears because 40 / .08 = 500.
The answer: 500
Reverse engineering the question: A farmer is growing corn. For every 4 seeds he plants, he gets one ear of corn, that he can sell for $.1. It costs $.5 for a bag with 100 seeds. If he makes $40 in profit, how many ears did he sell?


Reasoning and answer: He uses 40 * 1.5 = 60 pounds of crab meat per day. That cost 60 * 8 = $480 per day. He is open 7 - 3 = 4 days a week. So he spends 480 * 4 = $1920 a week.
The answer: 1920
What was the question?
Question: Johnny makes his signature crab dish 40 times a day. It uses 1.5 pounds of crab meat. Crab meat sells for $8 per pound. How much does he spend in a week if he is closed 3 days a week?


The 3 chickens amount to $3 x 3 = $9. Hence, the potatoes cost $15 - $9 = $6.
The answer: 6
Reverse engineering the question: Mrs. Thompson bought 3 chickens for $3 each. She also bought a bag of potatoes. Mrs. Thompson paid $15 in total. How much did the potatoes cost?


If Alexa's shoes are twice those of Jasmine, then her shoe size is 7 * 2 = 14. The total shoe size is 14 + 7 = 21.
The answer: 21
Reverse engineering the question:
Jasmine and her older sister Alexa went to the store to buy shoes. Alexa's shoes are twice as big as Jasmine's shoes. If Jasmine's shoe size is 7, what's the combined shoe size for both of them?