# Units

Related Topics:
More Lessons for Problem Solving and Data Analysis

More Lessons for SAT Math

More Resources for SAT

Algebra Tutorials

This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.

Units — Basic example
A high school class is measuring the amount of nitrate in a local stream. To be considered safe to drink, the maximum amount of nitrate that can be present in water is 10 milligrams per liter. The class takes a sample of 15 liters (L) of water. If the number of milligrams per liter of nitrate in the stream water is 3/4 of the maximum that is safe to drink, how many milligrams (mg) of nitrate should the class expect to find in their sample?
Go to next Question

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.