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OpenStudy (anonymous):
Please Help! Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 4 liters of natural oil for every 7 liters of synthetic oil. In order to make 605 liters of Petrolyn oil, how many liters of natural oil are needed?
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OpenStudy (anonymous):
4/11 of the total is the synthetic oil so 4/11 x 1045 4S + 7N 1045)/11 * 4 = 380 litres
jimthompson5910 (jim_thompson5910):
it should be (4/11)*605 not (4/11)*1045
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