SOLUTION: Petrolyn oil is a combination of natural oil and synthetic oil- 5 parts natural oil for every 3 parts of synthetic oil. How many liters of natural oil are contained in 560 liters o

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Petrolyn oil is a combination of natural oil and synthetic oil- 5 parts natural oil for every 3 parts of synthetic oil. How many liters of natural oil are contained in 560 liters o      Log On


   

Question 464772: Petrolyn oil is a combination of natural oil and synthetic oil- 5 parts natural oil for every 3 parts of synthetic oil. How many liters of natural oil are contained in 560 liters of Petrolyn oil?
Found 2 solutions by josmiceli, lwsshak3:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
You need to find:
(parts of natural oil)/(parts of Petrolyn oil)
That equals:
+5+%2F+%285+%2B+3%29+=+5%2F8+
For 560 liters of Petrolyn oil,
+5%2F8+=+x%2F560+
Multiply both sides by 560
+5%2A70+=+x+
+x+=+350+
350 liters of natural oil are contained in 560 liters of Petrolyn oil

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Petrolyn oil is a combination of natural oil and synthetic oil- 5 parts natural oil for every 3 parts of synthetic oil. How many liters of natural oil are contained in 560 liters of Petrolyn oil?
...
let x=liters of natural oil
560-x=liters of synthetic oil
..
x/(560-x)=5/3
3x=2800-5x
8x=2800
x=350
ans:
350 liters of natural oil are contained in 560 liters of Petrolyn oil