Q: Christopher, Jameson, and June each bought a toy sword. June's sword is 5 inches longer than Jameson's sword. Jameson's sword is 3 inches longer than twice the length of Christopher's sword. Christopher's sword is 15 inches long. How many inches longer is June's sword than Christopher's sword?
A: Twice the length of Christopher's sword is 15 x 2 = 30 inches. So, Jameson's sword is 30 + 3 = 33 inches long. June's sword is 33 + 5 = 38 inches long. Thus, June's sword is 38 - 15 = 23 inches longer than Christopher's sword. The answer is 23.
Question: Sally sews 4 shirts on Monday, 3 shirts on Tuesday, and 2 shirts on Wednesday. Each shirt has 5 buttons. How many buttons does Sally need to sew all the shirts?
Answer: Total number of shirts Sally sews is 4 + 3 + 2 = 9 shirts. The total number of buttons she needs is 9 x 5 = 45 buttons. The answer is 45.
[Question]Vicky has an excellent internet connection. She can download up to 50 MB/second. She has to download a new program to finish a college assignment. The program’s size is 360GB. If the internet connection is at maximum speed, how many hours does she have to wait until the program is fully downloaded? (There are 1000 MB per GB.)
[Answer]We have to know how many MB are 360GB, 360GB x 1,000MB / 1GB = 360,000 MB. The total seconds downloading will be 360,000MB ÷ 50MB / second = 7,200 seconds. So she has to wait 7,200 seconds ÷ 3,600 seconds / 1 hour = 2 hours. The answer is 2.
Q: During the Mardi Gras parade, Latch caught four less than three times as many necklaces as did Rhonda. If Rhonda caught half as many necklaces as did Boudreaux, and Boudreaux caught twelve necklaces, how many necklaces did Latch catch?
A: Rhonda caught half as many necklaces as did Boudreaux, or 12 / 2 = 6 necklaces. Three times as many necklaces as Rhonda caught is 6 * 3 = 18 necklaces. Thus, Latch caught four less than three times as many necklaces as did Rhonda, for a total of 18 - 4 = 14 necklaces. The answer is 14.
Question: Daria is raising money for a new vacuum cleaner. So far, she has collected $20 in her piggy bank and has decided to put $10 in it each week. If the vacuum cleaner costs $120, how many weeks will it take her to raise enough money to cover this expense?
Answer: The vacuum cleaner costs $120, so Daria needs 120 - 20 = $100 more. Daria will need 100 / 10 = 10 more weeks, to be able to buy the vacuum cleaner. The answer is 10.
Q: Daria wants to go to a concert by her favorite band. She wants to buy tickets for her and for three of her friends. One ticket cost is $90. How much money does Daria need to earn if she currently has only $189?
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Daria wants to buy tickets for four persons, so the cost will be 4 tickets * $90 / ticket = $360. Daria currently has $189, so she needs $360 - $189 = $171 more. The answer is 171.