Single discount

Find the single discount equivalent to two successive discounts of 20% and 10%.

Correct answer:

p =  28 %

Step-by-step explanation:

p1=100%20%=110020=0.8 p2=100%10%=110010=0.9  r=p1 p2=0.8 0.9=2518=0.72  p=100 (1r)=100 (10.72)=28%



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