Question

6
The ratio of girls to boys in a class is 42:35.
There are 18 girls. How many boys are there?​

Answer 1

Answer:

15 boys

Step-by-step explanation:

Let the no. of boys be x

$\implies$ $\sf{ {\Large\frac{42}{35}}={\Large\frac{18}{x}}}$

$\implies$ $\sf{x×42=35×18 }$

$\implies$ $\sf{ x={\Large\frac{35×18}{42}} }$

$\implies$ $\sf{x=15\:boys }$

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