Question

There are 77 students in the student council. The ratio of girls to boys is 7 : 4. How many girls are in the student council?

Answer 1

Answer:

here Ur answer

Step-by-step explanation:

number of girls --- 7x

numbero boys ---- 4x

7x + 4x = 77

11x = 77

x= 7

so we have 49 girls and 28 boys

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Answer 2

49 girls are in the student council

Given :

• There are 77 students in the student council.

• The ratio of girls to boys is 7 : 4

To find :

The number of girls are in the student council

Solution :

Step 1 of 2 :

Form the equation to find number of girls are in the student council

Here it is given that there are 77 students in the student council.

The ratio of girls to boys is 7 : 4

Let number of girls = 7x and number of boys = 4x

By the given condition

7x + 4x = 77

Step 2 of 2 :

Find the number of girls are in the student council

$\displaystyle \sf 7x + 4x = 77$

$\displaystyle \sf{ \implies }11x = 77$

$\displaystyle \sf{ \implies }x = \frac{77}{11}$

$\displaystyle \sf{ \implies }x = 7$

Number of girls = 7 × 7 = 49

Number of boys = 4 × 7 = 28

Hence 49 girls are in the student council

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