Answer the following question.
Tony has two fish. Every year, his parents buy him two more, but one of them dies. How many fish will he have in five years?
Step-by-step reasoning process: Each year Tony has one more fish than before because 2 - 1 = 1. In five years, he will have 5 more fish because 5 x 1 = 5. In five years he will have 7 fish because 2 + 5 = 7.
The answer is 7.

Answer the following question.
Oliver collects trading cards. He has twice as many Monster Club cards as Alien Baseball cards. His Battle Gremlins card collection is the largest at 48 cards, three times the size of his Alien Baseball card collection. How many Monster Club cards does Oliver have?
Step-by-step reasoning process: Oliver's Alien Baseball card collection has 48 / 3 = 16 cards. Oliver has twice as many Monster Club cards, so he has 16 * 2 = 32 Monster Club cards.
The answer is 32.

Answer the following question.
Alexa has a lemonade stand where she sells lemonade for $2 for one cup. If she spent $20 on ingredients, how many cups of lemonade does she need to sell to make a profit of $80?
Step-by-step reasoning process: To make a profit of $80, she needs to make $80 + $20 = $100. She needs to sell $100 / $2 = 50 cups of lemonade.
The answer is 50.

Answer the following question.
Derrick measures the length of his yard. The length of Alex's yard is half the size of Derrick's and the length of Brianne's yard is 6 times the size of Alex's. If Brianne's yard is 30 yards long, how long is Derrick's yard, in yards?
Step-by-step reasoning process: The length of Alex's yard is 30 / 6 = 5 yards. The length of Derrick's yard is 5 * 2 = 10 yards.
The answer is 10.