04a1c0dfa5f845b09c3affb7410a5556.mp4 24.43 MB

A merchant buys 80 articles, each at Rs.40. He sells n of them at a profit of n% and the remaining at at a profit of (100-n)%. What is the minimum profit the merchant could have made on this trade? can not understand question

A merchant buys 80 articles, each at Rs.40. He sells n of them at a profit of n% and the remaining at at a profit of (100-n)%. What is the minimum profit the merchant could have made on this trade? can not understand question