If you are a business person in any way you will need to know how to calculate a return on an investment. To start this you will need to know the amount you are spending in total. Include all expense. Subtract that from what you will make on the item and that is the return you will make on the investment. If you spend 10.00 on a pint of lotion and 5.00 in shipping and 2.50 for the jars for the
. lotion then you have spent a total of 17.50 on the item. If that pint will give you 20 jars of lotion and you sell them at 10.00 per jar you will make 200.00. Subtract the 17.50 from the 200.00 and that is the return on your investment.
