Question

A solution of alcohol and water is 90% alcohol. The solution is found to contain 63 milliliters of alcohol. How many milliliters total (both alcohol and water) are in the solution?

Answer 1

`thank \: you`

Answer 2

70 [milliliters]

Explanation:

Since the solution consists of 90% alcohol, the 63 milliliters of alcohol must represent 90% of the entire solution. Let the solution have
`x` milliliters in total. We have the following equation:

`0.9x=63`

Divide both sides by 0.9:

`x=(63)/(0.9)=\boxed{70}`

Therefore, there are 70 milliliters in the solution.