Question

In a class of 42 students,the number of boys is 2/5 of the girls. Find the numbers of boys and girls in the class​

Answer 1

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Answer 2

Answer:

number of boys = 12

number of girls = 30

Step-by-step explanation:

$\boxed{Given,}$

In a class of 42 students, the number of boys is 2/5 of the girls

$\boxed{To \ find,}$

the numbers of boys and girls in the class.

$\boxed{Solution,}$

Let the number of girls be x

then the number of boys = (2/5) x

Total no.of students = 42

$x+\frac{2}{5} x=42 \\\\ \frac{7}{5} x=42 \\\\ 7x=42 \times 5 \\\\7x=210 \\\\ x=210/7 \\\\ x=30$

Number of girls = 30

Number of boys = (2/5) × 30

                           = 2 × 6

                           = 12