1.

यदि `m : n = 3 : 2` तब `(4m + 5n) : (4m - 5n)` किसके बराबर होगा !A. `4:9`B. `9:4`C. `11:1`D. `9:1`

Answer» Correct Answer - C
`m : n = 3 : 2`
`(m)/(n) =(3)/(2)`
`rArr (4m+5n)/(4m-5n)rArr(n(4(m)/(n)+5))/(n(4(m)/(n)-5))`
`rArr(4xx(3)/(2)+5)/(4xx(3)/(2)-5)rArr(6+5)/(6-5)rArr (11)/(1)`
`rArr 11:1`.


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