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एक बैग मे 280 सिक्के एक रुपया, 50 पैसे व 25 पैसे के रू मे है। यदि उनका मान `8 : 4 : 3` के अनुपात मे है। तो 50 पैसे के सिक्को की संख्या ज्ञात करो।
A. 70
B. 60
C. 80
D. 90

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Correct Answer - C
Rs. 1 : 50P : 25 P
Value of coins 8x : 4x : 3x
No. of coins `8x xx1 : 4x xx2 : 3x xx4`
8x : 8x : 12x
`therefore` (कुल सिक्के )
`implies 8x+8x+12x=28x`
28x=280 (given )
`x=(280)/(28)=10`
`therefore` ( 50 पैसे के सिक्कों की संख्या )`=8x=8xx10=80`

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