Word problem??

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Petrolyn oil is a combination of natural oil and synthetic oil--4 parts natural oil for every 7 parts of synthetic oil. How many liters of synthetic oil are contained in 627 liters of Petrolyn oil?

2007-09-04 17:15:17 · 2 answers · asked by baby166_99 2 in Science & Mathematics ➔ Mathematics

2 answers

the rate is 7 synthetic to 11 petrolyn from (7synth+4natural)

7/11 * 627 = 399 L of synth oil

2007-09-04 17:25:26 · answer #1 · answered by 037 G 6 · 0⤊ 0⤋

11p = 4n + 7s then 627p will have
s = 627(7/11) L = 399 L

2007-09-05 00:32:02 · answer #2 · answered by sv 7 · 0⤊ 0⤋