The price

The price of the calculator gradually decreased. From 65 euros to 30 euros, then to 10 euros and finally to 4 euros. What percentage were the individual reductions? What percentage of the original price was reduced?

Correct answer:

p1 =  53.8462 %
p2 =  66.6667 %
p3 =  60 %
p4 =  93.8462 %

Step-by-step explanation:

c1=65 Eur c2=30 Eur c3=10 Eur c4=4 Eur  p1=100 c1c1c2=100 656530=13700%=53.8462%
p2=100 c2c2c3=100 303010=3200%=66.6667%
p3=100 c3c3c4=100 10104=60%
p4=100 c1c1c4=100 65654=13122093.8462%   Verifying Solution:  p=p1+p2+p3=13700+3200+60=397040180.5128 % p = p4

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