Question

petrollyn motor oil is a combination of natural oil and synthetic oil. it contains 7 liters of natural oil for every 4 liters of synthetic oil. in order to make 594 liters of petrollyn oil, how many liters of natural oil are needed? liters of natural oil

Explanation:

Step1: Find the ratio - total parts

The ratio of natural oil to synthetic oil is 7:4. The total number of parts in the ratio is $7 + 4=11$ parts.

Step2: Find the amount per part

We want to make 94 liters of petrol - yn motor oil. To find the amount per part, we divide the total volume by the total number of parts. So, the amount per part is $\frac{94}{11}$ liters.

Step3: Find the volume of natural oil

Since natural oil is 7 parts of the total, the volume of natural oil is $7\times\frac{94}{11}=\frac{658}{11}\approx59.82$ liters.

Answer:

$\frac{658}{11}\approx59.82$ liters