Calculate 6430

There are 600 pupils at the school, of which 350 are boys.

Calculate the ratio

(a) the number of boys to the number of girls
b) the number of girls to the number of pupils at the school.

Correct answer:

a =  7:5
b =  5:12

Step-by-step explanation:

$$\begin{gathered} z=600 \\ c=350 \\ d=z-c=600-350=250 \\ a=c/d=350/250=\frac{7}{5}=1\frac{2}{5}=1.4=7:5 \end{gathered}$$

$b=d/z=250/600=\frac{5}{12}\approx 0.4167=5:12$

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