Question

In a class of
class of 60 students
60 students, the number
girl
is one third the number of boys
find number of girls and boys​

Answer 1

Answer:

$let \: \: the \: \: no. \: \: of \: \: boys \: \: be \: x \\ so \: \: no. \: \: of \: \: girls \: \: be \: \: \frac{1}{3} x \\ total \: \: no. \: \: of \: students \: \: = 60 \\ according \: to \: the \: question \\ 1x + \frac{1}{3} x = 60 \\ \frac{4}{3} x = 60 \\ 4x = 60 \times 3 \\ x = \frac{60 \times 3}{4} \\ x = 15 \times 3 \\x = 45 \\ \\ no. \: \: of \: \: boys = 45 \\ no. \: \: of \: \: girls = \frac{1}{3} \times 45 \\ = 15 \: girls$

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Let the number of boy be X

let the number of girls be Y

therefore, x+y =60 equation 1

but y=1/3x equation 2

putting value of equation2 in1

1/3x+x=60

1 x+3 x/ 3=60

4x/3=60

4x=60×3

x=180/4

therefore X =45

putting value of x in equation 2

y=1/3×45

y=15

No.of boys =45

No. of girls=15