1.

यदि `x:y=3=3:4` है तो `(7x+3y): (7x-3y)` किसके बराबर हैA. `5:2`B. `4:3`C. `11:3`D. `37:19`

Answer» Correct Answer - C
`x:y=3:4`
`(7x+3y)/(7x-3y)=y/y((7 x/y +3)/(7 x/y -3))=(7xx 3/4+3)/(7xx 3/4-3)`
`(21/4+3)/(21/4-3)=((21+12)/4)/((21-12)/4)=11/3`


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