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प्रश्न
What number decreased by 12% of itself gives 1584?
उत्तर
Let the number be x.
Therefore,
`x - (12)/(100) xx x` = 1584
⇒ `(100x - 12x)/(100)` = 1584
⇒ 88x = 1584 x 100
⇒ x = `(1584 xx 100)/(88)`
⇒ x = 1800
Hence, 1800 is the number.
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