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...
What is the final percentage change compared to the original number? A. 4% decrease B. 4% increase C. No change D. 20% decrease 相关知识点: 试题来源: 解析 A。设这个数为 x,增加 20%后变为 1.2x,再减少 20%变为 1.2x×0.8 = 0.96x,所以相比原来减少了 4%。反馈 收藏 ...
If a number is increased by 20% and then decreased by 20%, what is the overall change? A. Decreased by 4% B. Increased by 4% C. No change D. Decreased by 20% 相关知识点: 试题来源: 解析 A。解析:设这个数为 100,增加 20%后是 120,再减少 20%是 120 乘以(1 - 20%)等于 96,...
To solve the problem "A number increased by 9 gives 43. Find the number," we can follow these steps: 1. Define the Variable: Let's assume the unknown number is represented by x. 2. Set Up the Equation: According to the problem, when we increase this number x by 9, we get 43...
work out这一动作发生在本句谓语动词的动作之前,应该用现在分词完成式的被动语态。所以having been worked out是答案。全句相当于:As a new techniquehad been worked out,the yields as a whole increased by 20 percent since last year. 知识模块:语法...
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...
相关知识点: 试题来源: 解析 A。“increased by”表示“增加了……”,即“become larger by”。B 选项“become smaller by”是“减少了……”;C 选项“stay the same as”是“和……一样”;D 选项“become half of”是“成为……的一半”。反馈 收藏 ...
百度试题 结果1 题目 Four times a number increased by 20 is the same as five times the number increased by9. Find the number. 相关知识点: 试题来源: 解析 11 11 反馈 收藏
由于动词work out和a new technique是逻辑动宾关系,故此处只能使用过去分词的独立结构或使用被动语态的现在分词独立结构,例如:Machines having been used,people do more workwith less energy.由于使用了机器,人们就能用较少的力气,干较多的工作。 知识模块:语法...
结果1 题目 A number is increased by 25% and the resulting number is then decreased by 20%. The final number iswhat percent of the original number? A. 90% B. 95% C. 100% D. 105% E. 120% 相关知识点: 试题来源: 解析 C 反馈 收藏 ...