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If the ages o...

Question

If the ages of John and James are in the ratio 2:3, what is the age of James if John's age is 20?

A

23

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B

32

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C

30

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D

25

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Solution

The correct option is C 30
John and James ages are in the ratio 2:3.
$\frac{2}{3}$ = $\frac{20}{z}$
z $\times$ 2 = 3 $\times$ 20
z = 30 (divide by 2 on both sides)
Jame's age = 30

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