Percentage 65844

Mr. Josef sold home-grown potatoes at 79 cents per kilogram. When he had the last 5 kg, he told the customer: collect them all for 3 euros!
By what percentage did Mr. Josef reduce the potatoes?

Correct answer:

p =  24.1 %

Step-by-step explanation:

c1=0.79 eur/kg c2=3/5=53=0.6 eur/kg  p=100 c1c1c2=100 0.790.790.6=791900%=24.1%

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