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%

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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
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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  • 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
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
so 28% thank you boss. you are the best

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