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प्रश्न
If `(3x + 5y)/(3x - 5y) = (7)/(3)`, find x : y.
उत्तर
`(3x + 5y)/(3x - 5y) = (7)/(3)`
Applying componendo and dividendo
`(3x + 5y + 3x - 5y)/(3x + 5y - 3x + 5y) = (7 + 3)/(7 - 3)`
`(6x)/(10y) = (10)/(4)`
`x/y = (10 xx 10)/(4 xx 6)`
`x/y = (25)/(6)`
∴ x : y = 25 : 6
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