Question

In a class there are $20$ girls and $30$ boys, then

Strength : Girls$=$_______ $\left[2:5/5:2\right]$

Answer 1

Given that,

Number of boys in the class $=30$

Number of girls in the class $=20$

Strength of the class $=$Number of boys in the class $+$ Number of girls in the class

$=30+20=50$

Ratio of strength of the class to number of girls $=50:20$

Lowest form of $50:20=\frac{50}{20}=\frac{5}{2}=5:2$ ( Divide both $50$ and $20$ by their HCF $10$)

Hence, Strength : Girls $=5:2$