Question

in a class of 35 students,the number of girls is two fifth of the number of boys. find the number of girls. please answer quickly

Answer 1

Answer:

Let the number of boys=x  

The number of girls=   2x \5  

According to statement,

x+  2x \5  =35 ⟹  5x+2x \5  =35  ⟹  7x\5  =35

7x=35×5    ⟹x=  35×5 \7  =25.

∴ Number of boys= x=25

Number of girls=  2 \5  x=  2 \5×25=10

Answer

4.0/5

183

Fuschia

Let the number of boys be x

number of girls = 2/5x

Total number of students = 35

Number of girls + number of boys = 35

=> 2/5x + x = 35

=>( 2x + 5x)/5 = 35

=> 7/5x = 35

=> x = 25

Number of girls = 2/5 * 25 = 10

Therefore there are 10 girls in the class.

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Answer 2

Answer:

10

Step-by-step explanation:

Correct option is A)

If the number of girls =g

If the number of boys =b

Total no. of the students in the class =35 (given)

$\mathrm{SO}$

$g+b=35 \ldots \ldots(1)$

The number of girls is two-fifth of the number of boys.

So,

$g=\frac{2}{5} b \ldots . .(2)$

From (1) and (2),

$\frac{2}{5} b+b=35$

$\frac{7}{5} b=35$

$\mathrm{b}=\frac{35 \times 5}{7}$

b=25

now, from (1),

g+25=35

g=35-25=10

So the no. of girls in the class is 10

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