Question

Darius buys a bottle of a chemical solution that contains 70\%70%70, percent alcohol. The bottle contains 500500500 milliliters of solution.
How many milliliters of alcohol are in the solution?

Answer 1

The amount of solution is :

= 500ml

The percentage of alcohol is 70%.

The amount of alcohol in the solution is :

70/100 × 500 = 350 ml

The amount of alcohol is thus %

350 ml

Answer 2

There is 350 millilitres of alcohol in the solution.

• The bottle of chemical solution contains 70% of alcohol.
• The bottle contains 500 millilitres of solution.
• Therefore, 70% of 500 ml is the amount of alcohol in the solution.

70% of 500 ml = Amount of alcohol

Amount of alcohol = $\frac{70}{100}$ × 500

Amount of alcohol = 0.7 × 500 = 350

• Therefore, the amount of alcohol in the solution is 350 ml.