Question

Answer the following questions by using simple equations:-

1) The ratio of number of boys and girls in a class is 4 : 3 .If the total strength of that class is 35 , find the number of boys and girls.​

Answer 1

Answer:

boys 20

girls  15

Step-by-step explanation:

ratio of no: of  boys to the girls is 4:3

total no: of boys and girls is 35

no: of boys is 35×4/7=20

no: of girls is 35×3/7=15

hope it cler and helpfull

Answer 2

Given :

• The ratio of number of boys and gïrls in a class is 4 : 3.
• The total strength of that class is 35.

To find :

• the number of boys and gïrls.​

Solution :

⇒ Let's find the number of gïrls and boys.

• Let the number of boys be 4x and the number of gïrls be 3x.

$\sf \longrightarrow 4x + 3x = 35$

$\sf \longrightarrow 7x = 35$

$\sf \longrightarrow x = \dfrac{35}{7}$

$\sf \longrightarrow x = \cancel{ \dfrac{35}{7} }$

$\sf \longrightarrow x = 5$

$\sf \therefore x = 5$

$\sf \longmapsto Number \: of \: Boys = 4x$

$\sf = 4 \times 5$

$\sf = 20$

$\sf \longmapsto Number \: of \: Girls = 3x$

$\sf = 3 \times 5$

$\sf = 15$

• Therefore, the number of boys is 20 and the number of gïrls is 15.

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