Question

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The ratio of boys to girls in a class is 4:3. There are 35 students in the class. How many students are boys?

Answer 1

Answer:

ratio 4x:3x

ratio 4x:3xtotal= 7x parts = 35(given)

ratio 4x:3xtotal= 7x parts = 35(given)x= 35/7 =5

ratio 4x:3xtotal= 7x parts = 35(given)x= 35/7 =5boys = 4x = 20

ratio 4x:3xtotal= 7x parts = 35(given)x= 35/7 =5boys = 4x = 20girls = 3x = 15

ratio 4x:3xtotal= 7x parts = 35(given)x= 35/7 =5boys = 4x = 20girls = 3x = 15The number of boys are more by 20-15 = 5.

Answer 2

☯ GiveN :

Ratio of boys and girls in class room is 4 : 3.

Number of students in class = 35

$\rule{200}{1}$

☯ To FinD :

We have to find how many boys are there in the class ?

$\rule{200}{1}$

☯ SolutioN :

Let the number of boys in class room be 4x.

Number of girls in class room = 3x

A.T.Q

$\sf{\dashrightarrow 3x + 4x = 35} \\ \\ \sf{\dashrightarrow 7x = 35} \\ \\ \sf{\dashrightarrow x = \frac{\cancel{35}}{\cancel{7}}} \\ \\ \sf{\dashrightarrow x = 5}$

Number of boys = 4x = 4(5) = 20

$\small{\star{\boxed{\sf{Number \: of \: boys = 20}}}}$

$\rule{100}{2}$

Number of girls = 3x = 3(5) = 15

$\small{\star{\boxed{\sf{Number \: of \: girls = 15}}}}$