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18 November, 16:04

A company is expanding its building area from 16,000 square feet to 19,360 square feet. What is the percentage increase of the area of the building space?

2.1%

21%

79%

33.6%

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Answers (1)
  1. 18 November, 16:09
    0
    So assume that 16000=100% and 19360 is x%

    %=parts out of 100 so

    100%=100/100

    16000=100%

    since they should be the same

    16000/100=19360/x

    multiply both sides by x/19360 to clear fraction

    16000x/1936000=1

    simplify

    x/121=1

    multiply both sides by 121

    x=121

    19360 is 121%

    the increase is 121-100=21% increase

    the increase is 21%
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