The number of girls in Grade 6 is one fifth more than that of boys, and boys account for a few percent of the total number of students in Grade 6

The number of girls in Grade 6 is one fifth more than that of boys, and boys account for a few percent of the total number of students in Grade 6

If x is set for boys, x + 1 / 5x is set for girls
X+X+1/5X=1
The solution is x = 5 / 11, that is, boys account for five out of eleven

There are 50 boys and 40 girls in Grade 6. How many are the girls? How many are the boys more than the girls?
Answer quickly

The number of girls is 40 / 50 = 4 / 5
Boys are more than girls (50-40) / 40 = 1 / 4

There are 58 students in class one of grade six. The sum of one fourth of girls and two fifths of boys is 19?
To solve by formula

Male = (19 × 4-58) / (2 / 5 × 4-1) = 30
Female = 58-30 = 28

There are 159 students in the sixth grade. Two thirds of the boys and three fifths of the girls are selected. There are 58 students left. How many are male and female

There are x boys and 159 girls
2/3x+3/5（159-x）=159-58
x=84
159-x = 75 (person)
After examination, it is consistent with the meaning of the question
A: there are 84 boys and 75 girls in Grade 6
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There are 58 students in class 6.1. It is known that four out of seven girls are equal to eight out of fifteen boys. How many boys and girls are there in class 1?

There are 58 students in the class. It is known that 4 / 7 of the female students are equal to 8 / 15 of the male students. How many are male and female

There are x girls and Y boys
Then x + y = 58
4/7x=8/15y
X = 14 / 15y is calculated from the second formula
And the first one is 14 / 15y + y = 58
Then y = 30 x = 28
There are 30 boys and 28 girls

1 / 3 is the sum of the two numbers whose molecule is 1

1/12+1/4=1/3

Use 1, 3, 5, 7, 9 to make five numbers, and then add them up to 100?

Odd plus odd is even, but even plus even plus odd can't be even, for example, 1 + 1 = 2,2 + 2 + 1 = 5. The five numbers in this question are singular. Since the sum is 100, then the end is 0, which is even, and these five numbers can't add up to 100

3 out of 7 plus 4 out of 7 means that the sum of () 1 out of 7 plus () 1 out of 7 is equal to（
3 out of 7 plus 4 out of 7 means that the sum of () 1 out of 7 plus () 1 out of 7 equals ()

3；4；1

What is the sum of seven twelve
When I was working on the test paper, I came across such a question: how many minutes does it take for the clock to go from 12 to 4, and to 8? Please help me to answer the right question first, or go daydreaming (no way, no way. Hehe, but some people like daydreaming, right_ ∩) O ha ha ~)!

12 to 4, a total of 4 hours, 4 * 60 = 240 (minutes)
12 to 8, 8 hours in total, 8 * 60 = 480 (minutes)