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एक संख्या को 25% घटा दिया जाता है तो वह संख्या 225 हो जाती है । इस संख्या में कितने प्रतिशत की वृद्धि की जाए की यह संख्या 375 हो जाए ?
A. `25%`
B. `30%`
C. `35%`
D. `75%`

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Correct Answer - a
(a) Let the number = x
According to the question
`(x x(100-25))/(100)=225`
`x=(225xx100)/(75)=300`
Required percentage
`=((375-300))/(300)xx100`
= 25%

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