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The pdf file above contains all of the questions published in the GMATQuantum blog. Please download the file and then open it in Adobe Acrobat Reader for all of its features to work properly.

Saturday
Apr142018

## GMAT Problem Solving 95: Algebraic word problems

Try this GMAT problem solving question on algebraic system of equations with more unknowns than the number of equations. A classic type of problem seen on the GMAT, often shows up in data sufficiency as well.

The check for a luncheon of 3 sandwiches, 7 cups of coffee and one piece of pie came to $$\3.15$$. The check for a luncheon consisting of 4 sandwiches, 10 cups of coffee and one piece of pie came to $$\4.20$$ at the same place. The cost of a luncheon consisting of one sandwich, one cup of coffee, and one piece of pie at the same place will come to

1. $$\quad \1.70$$

2. $$\quad \1.65$$

3. $$\quad \1.20$$

4. $$\quad \1.05$$

5. $$\quad \0.95$$

Wednesday
Apr042018

## GMAT exam shortened by eliminating experimental questions

GMAC has announced that the GMAT exam will be shortened by 30 minutes. This was accomplished by reducing the number of experimental or "unscored" questions in each of the Quantitative and Verbal section of the GMAT. The attached images shows the changes in the number of questions in each section and the total time per section. The number of questions in the quantitative section has been reduced to 31 from the current 37. The section time has also been reduced to 62 minutes from 75 minutes. In the verbal section, the number of questions has been reduced to 36 from 41. The time for the verbal section has also been reduced to 65 minutes from 75 minutes.

The number of scored questions in each section, the average time per question, and the scoring algorithm will remain completely unchanged. The Quantitative and Verbal Reasoning sections are being shortened by only reducing the number of unscored items. Unscored questions or experimental questions are used by GMAC as part of the question development process before they become scored GMAT questions. In the past there were 9 experimental questions in the Quantitative section and 11 experimental questions in the Verbal sections. These have been reduced to 3 in the Quantitative section and 6 in the Verbal section.

Detailed answers from GMAC at this link: FAQ from GMAC.
Friday
Mar162018

## GMAT Problem Solving 94: Sphere, circles, and triangles

Try this GMAT problem solving question that relies on a identifying circles and creating right triangles.

A ball was floating in a lake when the lake froze. The ball was removed (without breaking the ice), leaving a hole $$24$$ cm across at the top and $$8$$ cm deep. What was the radius of the ball (in centimeters)?

1. $$\quad 8$$

2. $$\quad 12$$

3. $$\quad 13$$

4. $$\quad 8\sqrt{3}$$

5. $$\quad 6\sqrt{6}$$

Video Explanation

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