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Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 6 liters of natural oil for every 5 liters of synthetic oil. In order to make 847liters of Petrolyn oil, how many liters of natural oil are needed?

Verified Answer :

In a petrolyn motor oil, in every 6 liters of
natural, there is also 5 litters of synthetic oil. So, if we put it in a formula,
it would be 6x+5x=11x of petrolyn motor oil. If 11x=847 petrylon oil, every x would
have 77 litters of petrolyn oil. Then that means that 6x=462 litters of natural,
which was needed in the 847 litters of petrylon oil.

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