Math, asked by ramlakhan5324, 10 months ago

प्रतिशत
किसी संख्या के 75% में 75 जोड़े जा
उत्तर ही संख्या है। संख्या का 40% ज्ञात
(A) 190 (B) 80
(C) 120
(D) 160​

Answers

Answered by mddilshad11ab
19

Answer:

OPTION -C

let  \\ the \: number \: be \: x \\ according \: to \: question \\  =  > x \times 75\% + 75 = x \\  =  > \frac{75x}{100}  = x - 75 \\  =  >  \frac{3x}{4}  = x - 75 \\  =  > 4x - 300 = 3x \\  =  > 4x - 3x = 300 \\  =  > x = 300 \\ now \: 300 \: of \: 40\% = 300 \times \frac{40}{100}  \\  = 3 \times 40 \\  = 120

hence :-

the required number is 120

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