How many ml of oil for 501 ratio?

To calculate the amount of oil needed for a 501 ratio, you would divide the total volume by the sum of the ratio parts. For a 501 ratio, there are 5 parts of oil and 1 part of another substance, making a total of 6 parts. Therefore, for every 501 ml of total mixture, you would use approximately 83.5 ml of oil (501 ml ÷ 6 parts × 5 parts = 417.5 ml of oil).