user: Q: Matt has 8 baseball cards worth $6 each. If he trades two of them to Jane in exchange for 3 $2 cards and 1 $9 card, how much profit does he make?
A: First find the value of the 2 cards Matt trades: $6 / card * 2 cards = $12. Then find the total value of the 3 $2 cards: 3 cards * $2 / card = $6. Then subtract the value of the cards Marcus gave up from the value of the cards he gained to find his profit: $9 + $6 - $12 = $3. The answer is 3.
Question: Of the 100 soccer balls that Nova went to inflate, 40 percent had holes in them and could not inflate, while 20% of the remaining balls were overinflated and exploded. How many balls were inflated successfully and could be used?
Answer: If 40% of the balls had holes in them and could not inflate, their number was 40 / 100 * 100 = 40. The remaining balls that Nova could inflate were 100 - 40 = 60. While inflating, 20% of the good soccer balls were overinflated and exploded up, a total of 20 / 100 * 60 = 12. The number of soccer balls that inflated successfully and could be used is 60 - 12 = 48. The answer is 48.
[Question]Arnold's collagen powder has 18 grams of protein for every 2 scoops. His protein powder has 21 grams of protein per scoop. And his steak has 56 grams of protein.  If he has 1 scoop of collagen powder, 1 scoop of protein powder and his steak, how many grams of protein will he consume?
[Answer]2 scoops of collagen powder have 18 grams of protein and he only has 1 scoop so he consumes 18 / 2 = 9 grams of protein. He has 9 grams collagen powder, 21 grams of protein powder and 56 grams in his steak for a total of 9 + 21 + 56 = 86 grams of protein. The answer is 86.
Q: The rainy season is here, Jan collected 65 gallons of water in a barrel outside her home. She uses 7 gallons of water each to clean the two cars and uses 11 fewer gallons than the two cars to water the plants. Then, she uses half of the remaining gallons of water to wash the plates and clothes. How many gallons of water does Jan use to wash her plates and clothes?
A: She uses 7 x 2 = 14 gallons of water to clean the two cars. She uses 14 - 11 = 3 gallons of water to water the plants. The total gallons of water that she uses to clean the cars and to water the plants is 14 + 3 = 17. Jan has 65 - 17 = 48 gallons of water remaining after cleaning the cars and watering the plants. Jan uses 48 / 2 = 24 gallons of water to wash her plates and clothes. The answer is 24.
Question: Out of the 200 apples in an orchard, 40 percent were rotten. Also, 70 percent of the rotten apples smelled. How many rotten apples in the orchard did not smell?
Answer: The number of apples in the orchard which were rotten is 40 / 100 * 200 = 80. Out of the 80 rotten apples, 70 / 100 * 80 = 56 were smelling. The number of rotten apples in the orchard which were not smelling is 80 - 56 = 24. The answer is 24.
Q: For many years, the number of sharks in Pelican Bay has been twice the number of Pelicans in Shark Bite Cove.  But today scientists say one-third of the Pelicans in Shark Bite Cove have moved to Pelican Bay. If there are still 60 sharks in Pelican Bay, how many Pelicans remain in Shark Bite Cove?
A:

assistant: If there are 60 sharks in Pelican Bay, and this number is twice the number of Pelicans that usually live in Shark Bite Cove, then there were 60 / 2 = 30 Pelicans in Shark Bite Cove. If one - third of the Pelicans in Shark Bite Cove move to Pelican Bay,. then 30 / 3 = 10 Pelicans will have moved away. This would leave 30 - 10 = 20 Pelican remaining in Shark Bite Cove. The answer is 20.