1.

38% of 4500-25% of ? = 1640A. 260B. 270C. 280D. 290

Answer» Correct Answer - C
`(4500xx38)/(100)-(?xx25)/(100)=1640`
`rArr 1710-(?)/(4)=1640`
`rArr (?)/(4)=1710-1640=70`
`:. ?=4xx70=280`


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