anonymous
  • anonymous
The price of an item is reduced by 10% followed by a reduction of 20%, then the resulting reduction is: a) 30% b) 12% c) 21% d) 28%
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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phi
  • phi
say something costs x dollars and you reduce it by 10% that means you subtract off 10% of x x - 10% of x write 10% as the decimal 0.10 x- 0.10 x factor out the x x(1-0.10) simplify 1-0.10 to get 0.9 x*0.9 or 0.9 x in other words, 10% off means multiply by 0.9
phi
  • phi
20% off means "multiply by 0.8" so if you take off 10%, to get 0.9x then take 20% off of that: 0.8*0.9*x and simplify you get 0.72 x
anonymous
  • anonymous
so 28% thank you boss. you are the best

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