Petrolyn motor oil is a combination of natural oil and synthetic oil. it contains 8 liters of natural oil for every 5 liters of synthetic oil. in order to make 728 liters of petrolyn oil, how many liters of synthetic oil are needed?
Petrolyn motor oil is a combination of natural oil and synthetic oil. it contains 8 liters of natural oil for every 5 liters of synthetic oil. natural oil / synthetic oil 8 / 5 let x= liters of synthetic oil and 728-x = liters of natural oil 8/5 = 728-x/x , 8x = 5 (728-x) 8x = 3640-5x 8x+5x = 3640 13x = 3640 x = 280 litres 280 liters of synthetic oil is needed to make 728 liters of petrolyn oil.
