a shopkeeper bought potatoes at the rate of rs 500 per 100 kg and sold them at the rate of rs 60 per 10 kg find the profit percentage

 20%

Step-by-step explanation:

if 500 = 100kg

          = 10kg

     50 = 10kg

%Profit = S.P/B.P *100

%Profit = 60/50 *100

%Profit = 120%

%Profit = 120% -100% = 20%

b.an increase in a causes b to decrease