解析 A。设这个数为 x,增加 5 后是 15,所以是 x + 5 = 15。B 选项 x - 5 = 15 表示这个数减去 5 等于 15,不符合题意。C 选项 5x = 15 表示这个数乘以 5 等于 15,也不符合。D 选项 15 - x = 5 意思是 15 减去这个数等于 5,同样不符合。
【题目】(8) A number is increased by 5, then multiplied by 5, then reduced by 5,and finally divided by 5. The result is 5. The number is( ). 答案 【解析】(8)1相关推荐 1【题目】(8) A number is increased by 5, then multiplied by 5, then reduced by 5,and finally divided by...
If a number is increased by 5 and then doubled, the result is 24. What is the number? A. 7 B. 8 C. 9 D. 10 相关知识点: 试题来源: 解析 A。本题考查数学推理在英语中的表达。设这个数为 x,那么(x + 5)×2 = 24,展开可得 2x + 10 = 24,移项得 2x = 14,解得 x = 7。选...
直低林程果北去给华想交这离金解界思直低林程果北去给华想交这离金解界思If a number is increased by 5 and the result is 12.
A number is increased by 50% and the result is 150. What was the original number? A. 100 B. 120 C. 130 D. 140 相关知识点: 试题来源: 解析 A。解析:设原来的数为x,增加50%后的数就是x加上50%x,即x+0.5x = 1.5x。已知结果是150,那么1.5x = 150,x就等于150除以1.5,得到100,所以选...
If a number is doubled and then increased by five. The result is twenty-five. What is the number? A. Ten B. Fifteen C. Twenty D. Twenty-five 相关知识点: 试题来源: 解析 A。设这个数是 x,2x + 5 = 25,2x = 20,x = 10。选项 A 是十,正确。选项 B 是十五,错误。选项 C 是二十...
If a number is doubled and then increased by 5, the result is 21. What is the original number? A. 8 B. 9 C. 10 D. 11 相关知识点: 试题来源: 解析 A。本题考查逆推法解决问题。设原数为 x,先双倍就是 2x,再增加 5 是 2x+5,已知结果是 21,即 2x+5=21,移项可得 2x=16,解得 ...
If a number is doubled and then increased by 5, the result is 21. What is the number? A. 8 B. 10 C. 12 D. 16 相关知识点: 试题来源: 解析 A。设这个数为 x,2x + 5 = 21,解得 x = 8。B 选项是错误的计算结果;C 选项和 D 选项也不符合条件。
If a increased by 20% of a results in b, then a + (20% of a) = b, a +0.2a =b, 1.2a = b. When b is decreased by 33(1/3)% of b, the result is c, so b - (1/3)b = (2/3)b = c. Since c = (2/3)b = (2/3)(1.2a) = 0.80a, then c is 80% of a...
百度试题 结果1 题目Translate " anumber increased by 47" into a mathematical expression.相关知识点: 试题来源: 解析 n+47 n+47