[Question]Donald drinks 3 more than twice the number of juice bottles Paul drinks in one day. If Paul drinks 3 bottles of juice per day, how many bottles does Donald drink per day?
[Answer]Twice the number of bottles Paul drinks in one day is 3 * 2 = 6 bottles. So, the number of bottles that Donald drinks in one day is 6 + 3 = 9 bottles. The answer is 9.
Q: Bill is laying power cable for a new neighborhood. There are going to be 18 east-west streets that are 2 miles long and 10 north-south streets that are four miles long. It takes 5 miles of cable to electrify 1 mile of street. If cable costs $2000/mile, what is the total cost of cable for the neighborhood?
A: First find the total distance of the east - west streets: 18 streets * 2 miles / street = 36 miles. Then find the total distance of the north - south streets: 10 streets * 4 miles / street = 40 miles. Then add the number of miles from each type of street to find the total distance: 36 miles + 40 miles = 76 miles. Then multiply that number by 5 to find the number of miles of cable needed: 76 miles street * 5 miles cable / mile street = 380 miles of cable. Then multiply that number by the cost of one mile of cable to find the total cost: 380 miles * $2000 / mile = $760,000. The answer is 760000.
Question: To raise money, a school is selling ice-pops for $1.50. It costs 90 cents to make each pop, and the money from the pops will be used to buy pencils, which cost $1.80 each. How many pops must be sold to buy 100 pencils?
Answer: To buy 100 pencils the school needs 100 * $1.80 = $180.00. Each ice pop sells for $1.50 but costs $.90 to make, for a net profit of $1.50 - $.90 = $.60. So in order to raise $180.00, the school will need to sell $180.00 / $.60 per ice - pop = 300 ice - pops. The answer is 300.
[Question]Xavier plays football with his friends. During 15 minutes Xavier can score 2 goals on average. How many goals on average is Xavier able to score, when the match lasted for 2 hours?
[Answer]Two hours means 2 * 60 = 120 minutes. So in 2 hours, there are with 120 / 15 = 8 groups of 15 minutes. So on average Xavier can score 8 * 2 = 16 goals. The answer is 16.
Q: Jeff had 300 pencils and donated 30% of them. Vicki had twice as many pencils as Jeff and donated 3/4 of his pencils. How many pencils are there remaining altogether?
A: Jeff donated 30 / 100 * 300 = 90 pencils. He remained with 300 - 90 = 210 pencils. Vicki had twice as many pencils as Jeff, meaning he had 2 * 300 = 600 pencils. When Vicki donated 3 / 4 of his pencils, he gave away 3 / 4 * 600 = 450 pencils. Vicki remained with 600 - 450 = 150 pencils. Together, Jeff and Vicki remained with 150 + 210 = 360 pencils. The answer is 360.
Question: Mary used 15 gallons of fuel this week. Last week she used 20% less. How much fuel did she use in total for the two weeks?
Answer:

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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Last week, she used 15 gallons * 0.2 = 3 gallons less fuel than she used this week. This means that she used 15 gallons – 3 gallons = 12 gallons of fuel last week. In total, Mary used 15 gallons + 12 gallons = 27 gallons of fuel. The answer is 27.