SOLUTION: Petrochemicals worth 6$ per liter are mixed with other chemicals worth 9$ per liter to produce 100 liters of chemical worth $7.65 per liter. How many liters of each are used?
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Question 167199: Petrochemicals worth 6$ per liter are mixed with other chemicals worth 9$ per liter to produce 100 liters of chemical worth $7.65 per liter. How many liters of each are used? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 9x+6(100-x)=7.65*100
9x+600-6x=765
3x=765-600
3x=165
x=165/3
x=55 liter of $9 cemicals are used.
100-55=45 liters of $6 chemicals are used.
Proof:
9*55+6*45=765
495+270=765
765=765
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