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प्रश्न
Four times a number is a ______ % increase in the number.
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उत्तर
Four times a number is a 300 % increase in the number.
Explanation:
Let x be the number.
So, four times of x is 4x.
Hence, 4x is greater than x by 4x – x = 3x
Percentage increase in `x = (3x)/x xx 100` = 300%
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