Answer:
544.44 ml of oil
Step-by-step explanation:
The total ratio of the salad dressing mixture is:
7 + 2 = 9 parts
To find the amount of oil, we divide 700ml by the total ratio (9) and then multiply the result by the oil ratio (7):
(700 ÷ 9) · 7 ≈ 544.44 ml of oil
So, Joshua used approximately 544.44ml of oil to make the salad dressing.