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question:Chalktown High School had their prom last weekend. There were 123 students who attended. If 3 students attended on their own, how many couples came to the prom?
answer:If 123 students attended the prom and 3 came on their own, then there were 123 - 3 = 120 students who came in couples. Since each couple consists of 2 students, the number of couples is 120 / 2 = 60. Therefore, 60 couples came to the prom. 60 The answer is: 60
question:The four-member math team at Pecanridge Middle School is chosen from the math club, which has three girls and five boys. How many different teams made up of two girls and two boys could be chosen?
answer:To form a team of two girls and two boys, we need to choose 2 girls out of 3 and 2 boys out of 5. The number of ways to choose 2 girls out of 3 is binom{3}{2}=3. The number of ways to choose 2 boys out of 5 is binom{5}{2}=10. Therefore, the total number of different teams that can be chosen is 3 times 10 = boxed{30}.The answer is: 30
question:f 15 is added to a quarter of a number, the result is 27. What is the number?
answer:Let's represent the number as x. A quarter of the number is x/4. If 15 is added to a quarter of the number, the equation becomes x/4 + 15 = 27. To solve for x, we can subtract 15 from both sides of the equation: x/4 = 12. To isolate x, we can multiply both sides of the equation by 4: x = 48. Therefore, the number is 48. 48 The answer is: 48
question:Mark has the option of getting a 300 lens with a 20% discount or a 220 lens. How much money does he save by buying the cheaper lens?
answer:The 300 lens has a 20% discount, so the discount amount is 300 * 0.20 = 60. After the discount, the 300 lens will cost 300 - 60 = 240. The 220 lens is already cheaper, so Mark will pay 220 for it. Therefore, Mark saves 240 - 220 = 20 by buying the cheaper lens. 20 The answer is: 20