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Four times a number is a ______ % increase in the number. - Mathematics

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Question

Four times a number is a ______ % increase in the number.

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Solution

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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Chapter 9: Comparing Quantities - Exercise [Page 291]

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NCERT Exemplar Mathematics [English] Class 8
Chapter 9 Comparing Quantities
Exercise | Q 44. | Page 291

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