Question: An oil company refines crude oil valued at $62/barrel and sells it to motorists at its retail outlets. The price is $4/U.S. gallon ($1.06/L). On a per unit basis (e.g., per gallon or per liter),
Part I: By what percentage has the price increased going from crude oil before refining to final sale to the motorist?
I am need of complete solution for this question please help- me out to get right solution.