Question

3. A 100-milliliter bottle of salad dressing initially consists of 80% oil and 20% vinegar. 40% of

the dressing is used, and then 4 milliliters of vinegar are added to the bottle. What
percentage of the mixture is now vinegar?

Answer 1

26.67
`\%` of Vinegar contains in the mixture.

Explanation:

Given:

Toatl Mixture in Bottle of Salad dressing= 100 ml

80
`\%` Oil in Mixture =
`(80)/(100)*100=80 ml`

20
`\%` Vinegar in Mixture =
`(20)/(100)*100=20ml\\`

Now 40
`\%` is Used of total mixture so 60
`\%` is remaining.

Remaining mixture = 60% =
`(60)/(100)* 100=60 ml`

20% of Vinegar in remaining mixture =
`(20)/(100)* 60= 12ml`

4ml of vinegar is added in remaining mixture.

Now vinegar quantity in remaining mixture = 12 +4 = 16ml

Percentage of Vinegar contains in the remaining mixture=
`(16)/(60)* 100`= 26.67%