Where do business man use maths in his daily life and how he will use maths write it in essay ?

 Business man uses maths in every field, whether to take goods from someone or to give. 

A commodity is compared to Rs. -40 per kg.  If you give us 40 rupees, I will give you one kilo of sugar.  Every person uses maths whether he is educated or illiterate.  

For example, to bring goods from a shop, to bring goods from the market.  To lend money to someone etc.