SOLUTION: Each day a mining company crushes 18,000 mg of shale-oil rock, some of it 72 L/mg and the rest 150 L/mg of oil. How much of each type of rock is needed to produce 120 L/mg?
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-> SOLUTION: Each day a mining company crushes 18,000 mg of shale-oil rock, some of it 72 L/mg and the rest 150 L/mg of oil. How much of each type of rock is needed to produce 120 L/mg?
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Question 1111575: Each day a mining company crushes 18,000 mg of shale-oil rock, some of it 72 L/mg and the rest 150 L/mg of oil. How much of each type of rock is needed to produce 120 L/mg? Found 2 solutions by josmiceli, ikleyn:Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = mg of 72 L/mg rock needed
Let = mg of 150 L/mg rock needed
-----------------------------------------
(1)
(2)
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(2)
(2)
Multiply both sides of (1) by and
subtract (1) from (2)
(2)
(1)
--------------------------------
and
(1)
(1)
(1)
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6,923.08 mg of 72 L/mg rock
11,076.92 mg of 150 L/mg rock
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check:
(2)
(2)
(2)
(2)
close enough
Definitely get a 2nd opinion on this one
You can put this solution on YOUR website! .
Each day a mining company crushes 18,000 mg of shale-oil rock, some of it 72 L/mg and the rest 150 L/mg of oil.
How much of each type of rock is needed to produce 120 L/mg?
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My opinion is that the condition is RUBBISH,
the problem is RUBBISH
and the post is RUBBISH, too.
Since NOBODY knows what are these units "mg" and "L/mg" to measure the amount of shale-oil rock.
I just expressed my thoughts regarding this text under the link
