Question

producer of 20% in the price of flour enable Aakriti to buy an extra 5 kg of it for Rs 320 find the original price per kg and the reduced price per kg

Answer 1

assuming you mean reduction of 20%, here is my answer:

Reduced price:

5 kg cost = 320.  therefore cost per kg = 320/5 = Rs. 64

This is at a reduction of 20%, so original cost per kg of rice = (64x100/80) = Rs.80