Answer:
Profit = Rs 100
Profit %age = 6.25%
Explanation:
Cost Price = Rs 80
Cost Price for 20 kg = Rs 1600
Selling Price = Rs 85
Profit for 1 kg = Rs 85 - Rs 80
=> Rs 5 (For 1 Kg)
Profit for 20 kg:
=> Rs 5*20
=> Rs 100
Now Profit %age:
=>

=> 0.0625 * 100
=> 6.25%