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Mathematics 13 Online
OpenStudy (anonymous):

Petrolyn oil is a combination of natural oil and synthetic oil - 4 parts natural oil for every 5 parts of synthetic oil. How many liters of natural oil are contained in 891 liters of Petrolyn oil?

OpenStudy (anonymous):

891/9 =99. 99x4=396. So 396 liters of natural. And 465 liters of synthetic if you need that.

OpenStudy (anonymous):

thank u

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