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Question
If x : y = 2 : 3 and y : z = 5 : 7, find x : y : z.
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Solution
x : y = 2 : 3
`= 2/3 : 1` (Dividing by 3)
and y : z = 5 : 7
`= 1 : 7/5` ...(Dividing by 5)
∴ x : y : z = `2/3 : 1 : 7/5`
= 10 : 15 : 21 ...(Multiplying by 3 × 5 = 15)
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