Free online video lessons from khanacademy
covering the practice questions in the problem-solving math section of The Official Guide
for GMAT Review.

It would be best that you go through the GMAT practice test questions in the Study Guide first and then look at the videos for the questions that you might need help in.

**Questions 30-35, pg. 156 **

**Questions 36-41, pgs. 156-157 **

**Questions 42-48, pgs. 157-158 **

**Questions 49-54, pgs. 158-159 **

**Questions 55-60, pg. 159 **

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.

We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.