A petroleum company has two different sources of crude oil. The first source provides 40% crude 50+2?
Friday, March 18th, 2011A petroleum company has two different sources of crude oil. The first source provides crude oil that is 40% hydrocarbons, and the second one provides crude oil that is 65% hydrocarbons. In order to obtain gallons of crude oil that is 50% hydrocarbons, how many gallons of crude oil must be used from [...]