How many gallons of gasoline that is 5% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 3% ethanol?

Explanation:

We have 3 solutions:

and for the ethanol:

Combining:

If V2=2000 gal:

i think it is true since you can test the answer and can use observations to complete it.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.