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Question
A number when increased by 23% becomes 861; find the number.
Solution
Let the number be x
By the given condition,
`x + (x xx23)/(100)` = 861
⇒ `(100x + 23x)/(100)` = 861
⇒ `x (123/100)` = 861
⇒ `x = (861 xx 100)/(123)` = 7 x 100 = 700
∴ the required number = 700
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