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 **

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

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