Q: Erika and her brother Rick want to buy a gift for their mother that costs $250. They have both saved money. Erika saved $155 and her brother saved only half of the cost of the gift. They also want to surprise their mother with a birthday cake that costs $25. How much money will they have left after buying their mother a gift and cake?
A: Rick's savings are half the price of the gift, which is $250 / 2 = $125. The total savings for the two siblings is $155 + $125 = $280. Mom's gift costs $250 + $25 for the cake = $275. Subtracting the total cost of the gift from the total savings, we get $280 - $275 = $5 left. The answer is 5.
Question: Georgina owns a parrot and is teaching it to speak. So far, the parrot knows seventeen phrases. If she is teaching it two phrases a week and it already knew three phrases when she bought it, how many days has Georgina had it?
Answer: The parrot knew 3 phrases when Georgina bought it, so it has learned 17 - 3 = 14 phrases from her. She has been teaching it 2 phrases a week, so she has had it 14 / 2 = 7 weeks. There are 7 days in a week, so Georgina has had the parrot for 7 * 7 = 49 days. The answer is 49.
[Question]A mad scientist created a shrink ray device that, when used on anything, would cause it to shrink by 50%. The scientist, eager to use his new invention, looked through his house for something to shrink zap. The first thing he found and zapped was his wife, who at the time was carrying a tray containing 5 cups filled with coffee. If each coffee cup held 8 ounces of fluid before being zapped, how many ounces of coffee remained after his wife and the cups filled with coffee were shrink zapped?
[Answer]Before the zap, the wife held 5 cups, each with 8 ounces of coffee, for a total of 5 * 8 = 40 ounces of coffee. After the zap, the coffee cups and their contents were shrunk by 50%, for a total of 0.5 * 40 = 20 ounces of coffee. The answer is 20.
Q: Tommy has 13 items in his pencil case. The pens are twice as many as the pencils and there's one eraser. How many pencils are there?
A: There are 13 items - 1 eraser = 12 pens and pencils. There are 12 items / 3 = 4 pencils. The answer is 4.
Question: Wendy has 5 facial products she puts on in the morning and she waits 5 minutes between each product. She also spends an additional 30 minutes putting on her make-up. How much time does it take her to put on her "full face?"
Answer: She puts on 5 products that take 5 minutes each so it takes her 5 * 5 = 25 minutes. It takes 25 minutes to put the products on and an additional 30 minutes for her make - up so all total it takes her 25 + 30 = 55 minutes. The answer is 55.
Q: Laura’s House is a 20-mile round trip from her school. The supermarket is 10 miles farther away from the school. If Laura drives to school every morning and two afternoons a week drives to the supermarket. How many miles does Laura driver per week?
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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7 days a week Laura drives 20 miles to school, so Laura drives 7 x 20 = 140 miles to school in one week. The supermarket is 10 miles farther away than the school. Therefore the supermarket is 10 + 10 = 20 miles away from Laura’s house. Laura drives 20 miles each way to and from the supermarket. Each trip is 20 x 2 = 40 miles. Laura drives 40 miles twice a week to visit the supermarket. Therefore she drives 40 x 2 = 80 miles in total a week to and from the supermarket. In total Laura drives 140 + 80 = 220 miles each week. The answer is 220.