Question

Á dishonest shopkeeper added 5 kg of sawdust to 20 kg of chilli
powder. He sold this mixture at Rs 50 a kg. If he had bought chilli
powder at Rs 35 per kg, what was his profit?
​

Answer 1

25 kg adulterated chilli powder contain = 20 kg actual chilli powder

So, 1 kg adulterated chilli powder contains = 20/25 kg = 0.8 kg actual chilli powder

Now, he bought 1 kg actual chilli powder for = Rs 35

So, cost of 0.8 kg chilli powder for shopkeeper = 0.8×35 = Rs 28

Total profit of shopkeeper on 1 kg chilli powder = profit of selling chilli powder + profit gained by adulteration = (50-35) + (35-28) = Rs 22