Answered

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a. 600 is ____% of 500 b. 100 is _____% more than 40.

Sagot :

sqdancefan

9514 1404 393

Answer:

  A. 120%

  B. 150%

Step-by-step explanation:

a. Let 'a' represent the percentage of interest.

  600 = a% × 500

  600/500 = a/100 . . . . . . . % means /100

  100(6/5) = a = 120

  600 is 120 % of 500

__

b. Let 'b' represent the percentage of interest. The given statement means ...

  100 = 40 + b% × 40

  100 = 40(1 +b/100) . . . . . factor out 40, use /100 for %

  2.50 = 1 +b/100 . . . . . . . divide by 40

  1.50 = b/100 . . . . . . . . . . subtract 1

  150 = b . . . . . . . . . . . . . . multiply by 100

100 is 150 % more than 40

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