Mary’s income is 60 percent more than Tim’s income…
May 11, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve this problem we create variables for the income of Mary, Tim, and Juan, and then set up some equations. T = Tim’s …
Author: Scott Woodbury-Stewart
Xavier, Yvonne, and Zelda each try independently to solve a problem…
May 9, 2015
GMAT OFFICIAL GUIDE PS Solution: We are first given the individual probabilities that Xavier, Yvonne, and Zelda WILL solve the problem. We list these below: P(Xavier will solve) = …
If x + 5 > 2 and x – 3 < 7, the value of x must be…
May 9, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s isolate x in each inequality. x + 5 > 2 x > -3 Next we simplify x – 3 < 7. x – …
If 1 kilometer is approximately 0.6 mile, which of the following…
May 9, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve, we must convert 2 miles to kilometers. We are given that 1 kilometer = 0.6 mile. Thus, we can convert 2 miles …
A glucose solution contains 15 grams of glucose per 100 cubic…
May 9, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that a glucose solution contains 15 grams of glucose per 100 cubic centimeters of solution. Since we are dealing with a …
The average (arithmetic mean) of 10, 30, and 50 is 5 more…
May 9, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s first determine the average of 10, 30, and 50, using the average formula. average = sum/quantity average = (10+30+50)/3 average = 90/3 average …
Car X averages 25.0 miles per gallon of gasoline and Car Y…
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve this problem we will need to use the formula: rate x gallons = distance, which means: gallons = distance/rate We need to …
If x = 1- 3t and y = 2t – 1, then for what value of t does x…
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given x = 1 – 3t and y = 2t – 1, and we need to determine the value for t when …