Question

If a:b = 5 : 2 if a =20 then what is the value of b

Answer 1

a:b=5:2

a=>20

$\frac{a}{b} = \frac{5}{2} \\ \\ a = 20 \\ \\ \frac{20}{b} = \frac{5}{2} \\ \\ b = > \frac{40}{5}$

$\color{red} \boxed{b = > 8}$

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Answer 2

Answer:

8

Step-by-step explanation:

let a be 5x and b be 2x. then

5x=20

X=4

so

2x=8