Question

a salad dressing is mixing oil and mayonnaise in the ratio 5:2 jake makes 700ml of the salad dressing how much oil does he use

Answer 1

Answer: 500 mL

Step-by-step explanation

The ratio 5:2 scales up to 5x:2x for some positive real number x.

• 5x = amount of oil
• 2x = amount of mayo
• 5x+2x = 7x = total amount of both = 700 mL

7x = 700

x = 700/7

x = 100

Then,

• 5x = 5*100 = 500 mL of oil is needed
• 2x = 2*100 = 200 mL of mayo is also needed

The ratio 500:200 reduces to 5:2 after dividing both parts by the GCF 100.