SOLUTION: A petroleum company has two different sources of crude oil. The first source provides crude oil that is 25% hydrocarbons, and the second one provides crude oil that is 75% hydrocar
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Question 1025535: A petroleum company has two different sources of crude oil. The first source provides crude oil that is 25% hydrocarbons, and the second one provides crude oil that is 75% hydrocarbons. In order to obtain 80 gallons of crude oil that is 65% hydrocarbons, how many gallons of crude oil must be used from each of the two sources?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = gallons of 25% crude needed
Let = gallons of 75% crude needed
------------------
(1)
(2)
----------------------------
(2)
(2)
(2)
(2)
Subtract (1) from (2)
(2)
(1)
-------------------
and
(1)
(1)
------------------
16 gallons of 25% crude is needed
64 gallons of 75% crude is needed
------------------
check:
(2)
(2)
(2)
(2)
(2)
OK
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