1.

यदि `x : y = 3 :4` हो तो `(4x - y)(2x+3y)` ज्ञात करो।A. `4:9`B. `8:9`C. `4:3`D. `8:3`

Answer» Correct Answer - A
` x : y = 3 : 4`
`therefore (x)/(y)=(3)/(4)`
`implies (4x-y)/(2x+3y) implies (y(4(x)/(y)-1))/(y(2(x)/(y)+3))`
`implies (4xx(3)/(4)-1)/(2xx(3)/(4)+3) implies ((3-1)xx2)/(3+6) implies (4)/(9)`
`4 : 9`


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