Question

16
A jar contanis 36 marbles .some are green and other are blue .if a marble is drawn at random from the jar .the probability of it being green is 5/9 .Then the number of blue balls in the jar is a.12,b.16, c. 20, d. 24​

Answer 1

Resposta:

$\textsf{Read below}$

Explicação passo a passo:

$\mathsf{green + blue = 36}$

$\mathsf{\dfrac{green}{36} = \dfrac{5}{9}}$

$\mathsf{9.green = 36.5}$

$\mathsf{9.green = 180}$

$\mathsf{green = \dfrac{180}{9}}$

$\mathsf{green = 20}$

$\mathsf{green + blue = 36}$

$\mathsf{blue = 36 - 20}$

$\boxed{\boxed{\mathsf{blue = 16}}}\leftarrow\textsf{letter B}$