### Brain Teasers

# Another Mixture

Dr. Joe has 2 liters of 70% benzene solution and 4 liters of 40% benzene solution. Dr. Joe decides to combine both solutions together, creating a 6-liter solution. What is the new percentage of benzene after everything is combined?

### Answer

The new solution will be 50% benzene.First calculate the amount of benzene that you have:

2(.70) = 1.4 liters in the 2-liter solution.

4(.40) = 1.6 liters in the 4-liter solution.

To get the final percentage, add these up and divide by the total amount of solution:

(1.4 + 1.6) / 6.0 = 0.5 = 50% solution.

Hide Answer Show Answer

## What Next?

View a Similar Brain Teaser...

If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.

### Solve a Puzzle

Comments hidden to avoid spoilers.

## Follow Braingle!