Q: Jason has a moray eel that eats 20 guppies a day and 5 betta fish who each eat 7 guppies a day. How many guppies per day does she need to buy?
A: First find the total number of guppies the betta fish need: 5 fish * 7 guppies / fish = 35 guppies. Then add the number of guppies the eel needs to find the total number needed: 35 guppies + 20 guppies = 55 guppies. The answer is 55.
Question: Yanni has $0.85. His mother gave him $0.40 in addition. While going to the mall, Yanni found $0.50. He bought a toy that cost $1.6. How much money in cents did Yanni have left?
Answer: Yanni's mother gave him $0.40 in addition to $0.85 for a total of $0.40 + $0.85 = $1.25. Yanni found $0.50 so he had a total of $1.25 + $0.50 = $1.75. Therefore, Yanni had $1.75 - $1.6 = $0.15 left. 100 cents make $1 so $0.15 is 100 * 0.15 = 15 cents. The answer is 15.
[Question]John buys a lightsaber toy. It is twice as expensive as all his other Star Wars toys combined. If his other Star Wars toys cost $1000, how much money has he spent in all after buying the lightsaber?
[Answer]The lightsaber cost 1000 * 2 = $2000. So he has spent 2000 + 1000 = $3000. The answer is 3000.
Q: During a day at the farm, Annie picked eight pints of blueberries. Kathryn picked two pints more than Annie, and Ben picked three pints fewer than Kathryn. How many pints, in total, did the three pick together?
A: Kathryn picked 8 + 2 = 10 pints. Ben picked 10 - 3 = 7 pints. The total is 8 + 10 + 7 = 25 pints. The answer is 25.
Question: Darius, Matt, and Marius are friends, who played table football. During all the games they played, Marius scored 3 points more than Darius, and Darius scored 5 points less than Matt. How many points did all three friends score together, if Darius scored 10 points?
Answer: If Darius scored 10 points, then Marius scored 10 + 3 = 13 points in total. Darius scored 5 points less than Matt, so Matt scored 10 + 5 = 15 points in total. So all three friends gathered 13 + 15 + 10 = 38 points. The answer is 38.
Q: Mike bought a DVD of his favorite movie. He paid $5 for it at the store. A friend of Mike's, Steve, saw this and also decided to buy a DVD of the movie, but it was already sold out. He needed to order it online, which cost him twice as much. And in addition, he needed to pay the shipping costs which were 80% of the price of the film he ordered. How much did Steve pay to get the DVD in total?
A:
The cost of the movie online was twice what Mike paid, so 2 * 5 = $10. The shopping costs were standing at 80 / 100 * 10 = $8. So in total Steve paid 10 + 8 = $18. The answer is 18.