cost benefit ratio

here you go the link for cost benefit ratio

 https://en.wikipedia.org/wiki/Benefit-Cost_Ratio 

A benefit-cost ratio (BCR) is an indicator, used in the formal discipline of cost-benefit analysis, that attempts to summarize the overall value for money of a project or proposal. A BCR is the ratio of the benefits of a project or proposal, expressed in monetary terms, relative to its costs, also expressed in monetary terms. All benefits and costs should be expressed in discounted present values