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When you multiply something by 18% (0.18) it goes down to 18% of that original value.

When you multiply something by 100% (1) it stays the same.

When you multiply something by 118%, it goes UP by 18%

TL;DR: Your answer is 118%

To increase an amount by 18%, multiplier 1.18 be use if the percent is 18%

What is percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

We have percent = 18%

The multiplier can be calculated:

= 1 + 18/100

= 1 + 0.18

= 1.18

Thus, to increase an amount by 18%, multiplier 1.18 be use if the percent is 18%

Learn more about the percentage here:

brainly.com/question/8011401

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