Step-by-step reasoning process: If the TV's original price was $500, at the auction, its price increased by 2 / 5 * $500 = $200. The total price at which the TV was sold at the auction is $500 + $200 = $700. The price of the phone also increased at the action, a 40% increase which is 40 / 100 * $400 = $160. The total price that the phone was sold for after the auction is $400 + $160 = $560. In total, the TV and the phone sold for $700 + $560 = $1260 at the auction.
The question and answer:
Question and answer: At an auction event, the price of a TV, whose cost was $500, increased by 2/5 times its initial price. The price of a phone, which was $400, also increased by 40% from its original price. If Bethany had taken both items to the auction, calculate the total amount she received for the items after the sale at the auction.
The answer is 1260

Step-by-step reasoning process: There are 3 trumpets / flute x 5 flutes = 15 trumpet players. There are 15 players - 8 players = 7 trombone players. There are 7 players + 11 players = 18 drummers. There are 2 clarinets / flute x 5 flutes = 10 clarinet players. There are 7 players + 3 players = 10 French horn players. In total 5 players + 15 players + 7 players + 18 players + 10 players + 10 players = 65 seats needed.
The question and answer:
Question and answer: The school band is going to a competition. Five members play the flute. There are three times as many members who play the trumpet. There are eight fewer trombone players than trumpeters, and eleven more drummers than trombone players. There are twice as many members that play the clarinet as members that play the flute. Three more members play the French horn than play the trombone. How many seats are needed on the bus?
The answer is 65

Step-by-step reasoning process: There are 5 school days in a week: 5 days / week x 2 containers of milk / day = 10 containers of milk every week. Finally the number of container for 3 weeks is 3 weeks x 10 containers / week = 30 containers.
The question and answer:
Question and answer:
Emma buys 2 containers of milk every school day for lunch. She does not go to school on the weekends. How many containers of milk does she buy in 3 weeks?
The answer is 30