Question

4. In a class, the ratio of the number of boys and girls is 9 : 5. Find the number of boys if the
total number of students in the class is 42.
5. In a village, males and females are in the ratio 12 : 11. What part of total population are
females in the village?
​

Answer 1

Answer:

4.x=3

Step-by-step explanation:

9x+5x=42

14x=42

x=3

Answer 2

$\large\underline{\underline{\sf\maltese{<strong>Answer</strong><strong>:</strong><strong>-</strong>}}}$

Let the boys be 9x

Let the girls be 5x

9x+5x=42

14x=42

x=42/14

x=3

boys=9×3 =27

girls=5×3 =15

$\huge\boxed{\fcolorbox{red}{cyan}{boys=27}}$

$\huge\boxed{\fcolorbox{red}{cyan}{girls=15}}$