Question

if The ratio of boys to girls is 6:5 how many boys are in the class if there are 15 girls

Answer 1

Answer:

Number of boys = 18

Step-by-step explanation:

Given :

Ratio of boys to girls = 6:5

No. of girls = 15

To find :

Number of boys

Taken :

To find the number of boys use this formula -:

$\boxed{\tt{N_{b}=\dfrac{R_{b}}{R_{g}}\times\:N_{b}}}$

Where,

$\tt{N_{b}=Number\:of\:boys}$

$\tt{N_{g}=Number\:of\:girls}$

$\tt{R_{b}=Ratio\:of\:boys}$

$\tt{R_{g}=Ratio\:of\:girls}$

Solution :

$\leadsto\tt{N_{b}=\dfrac{6}{\cancel{5}}\times\cancel{15}}$

$\leadsto\tt{N_{b}=6\times3}$

$\leadsto\tt{N_{b}=18\:boys}$

So , the number of boys is 18 .