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Algebra Difficulty 2.1 Junior Find the answer

Meg started with the number 100. She increased this number by 20%20\% and then increased the resulting number by 50%50\%. What was her final result?

A number or a short expression. Spacing and $ signs are ignored.

Solution

20%20\% of the number 100 is 20, so when 100 is increased by 20%20\%, it becomes 100+20=120100 + 20 = 120. 50%50\% of a number is half of that number, so 50%50\% of 120 is 60. Thus, when 120 is increased by 50%50\%, it becomes 120+60=180120 + 60 = 180. Therefore, Meg's final result is 180.

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