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Sonia bought 30 t shirts at a clothing store. 20% of the t shirts were blue and 1/2 of the t shirts were black. How many of the t shirts were neither black or blue?

User Lavamantis
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  • Answer:

9 T-Shirts

  1. Explanation:
  1. There are 30 t shirts. 20% of the t shirts were blue and 1/2 of the t shirts were black.
  2. 20% is equivalent/ the same as 20/100 and simplified, 1/5. 1/2 black + 1/5 blue = 70/100 black and blue.
  3. This leaves 30/100(30%) remaining t shirts (neither black or blue). This leaves us to find 30% of 30 (shirts). 30% of 30 equals 9. 30/100 = 9/30.

User Mike Koder
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