百度试题 结果1 题目(1) What number is 40% of 20?(2) What percent of 10 is 40?(3) 15 is 30% of what number?相关知识点: 试题来源: 解析 8; 25%; 50 (1) 40%×20=8 (2) 10÷40=25% (3) 15÷30%=50反馈 收藏
A. 20 B. 30 C. 40 D. 50 相关知识点: 试题来源: 解析 C。“If 20% of a number is 8”如果一个数的百分之二十是 8。设这个数为 x,则 20%×x=8,0.2x=8,x=8÷0.2=40。A 选项 20 不符合计算结果;B 选项 30 错误;D 选项 50 错误。反馈...
百度试题 结果1 题目The number 6 is what percent of 15 ?( ). A. 25%B. 30%C. 40%D. 60%相关知识点: 试题来源: 解析 C 6是15的百分之几 ? A. 25% B.30% C.40% D.60% 0.615=25=(25×100)%=40%. 故选C.反馈 收藏
If 30% of a number is 15, what is the number? A. 45 B. 50 C. 55 D. 60 相关知识点: 试题来源: 解析 B。本题考查百分数的计算。已知 30%的某个数是 15,那么这个数就是 15÷30% = 50,所以选择 B 选项。A 选项 45 不是 15 除以 30%的结果。C 选项 55 错误。D 选项 60 也...
解析 D The number 0.5=12,and 50% of 1 is also 12, so they' re equal. 数字0.5是1的50%的百分之几( ). A.0.5% B.25% C.50% D. 100% 0.5=二分之一, 1的50%就是二分之一,所以两个数是相等的 . 故选D.结果一 题目 【题目】【题目】【题目】【题目】【题目】【题目】【题目】...
一个数的20%等于这个数的1/5,令n为这个数,1/5n=12,两边同时乘以5,得到n=60.n的30%等于3/(10)n=3/(10)*60=3*6=18,故B正确.故选B.20% of a number is equal to 1/5 of that number. Let n= the number 1/5n=12 Multiply both sides by 5n=6030% of n is equal to 3/(10)n=3/...
百度试题 结果1 题目If 25% of a number is 5, what is the number? A. 10 B. 15 C. 20 D. 25 相关知识点: 试题来源: 解析 C。设这个数为 x,25%x = 5,x = 5÷25% = 20。易错点是计算时要注意除法运算。反馈 收藏
A. 20 B. 25 C. 30 D. 35 相关知识点: 试题来源: 解析 B。首先,设这个数为 x,30%x = 15,解得 x = 50。那么 50%×50 = 25,所以答案是 B 选项。A 选项 20 不是 50 的 50%;C 选项 30 不是 50 的 50%;D 选项 35 也不是 50 的 50%。反馈...
The percentage of any given number N relative to another number M is given by, Percentage {eq}= (N/M) 100 {/eq} So, if the percentage of a number N is given, the relative number M is calculated from the following relation:
英语翻译20is 10% of what number?1.75% of what number is 3.62.6 is what per cent of 123.what % of 10 is 64.which was 50% of the total number of game it played.5.Helen boughy a coat at a "20% off"sale and saved ＄24. 答案 20是多少的10%多少的75%是3.66占12的百分之几6占...