(ii) Decrease the number 750 by 10%

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Solution

(i) New number $= (1 - 10 / 100)$ of $750$
By further calculation
$= (1 - 3 / 10) \times 750$
So we get
$= 9 / 10 \times 750$
$= 9 \times 75$
$= 675$

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