# You are thirsty, so a friend has offered to give you 50% of his water. What information must you have in order to find out how much water your friend will give you?

May 10, 2018

How much water he has.

#### Explanation:

All you need to solve this is the amount of water that your friend has.

You can use an equation, where $f$ is the amount of water that your friend has and $w$ is the amount of water you'd get:

$\frac{1}{2} f = w$