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Mathematics 13 Online
OpenStudy (anonymous):

When a discount of 15% is given by a retailer is it the same as giving three successive discounts of 5% each? Give arguments to support your answers. OR To calculate a 15% tip on a $24 bill a customer adds $2.40 and half of $2.40, or $1.20, to get $3.60. Is this method valid? Why or why not?

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