A store reported total sales of $385 million for February of…
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: The formula for percent increase is (New – Old)/Old x 100%. Here the “New” sales is $385 million and the “Old” sales is $320 million. …
Tag: Problem Solving
The total cost for Company X to produce a batch of tools is $10,000 plus…
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: We know the relationship between profit, revenue and cost is: profit = revenue – cost or P = R – C (the relationship is actually …
Working simultaneously at their respective constant rates, Machines…
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: We have a combined worker problem. In such problems we use the equation: Work (1 machine) + Work (2 machine) = Total Work. We …
In the coordinate plane, a circle has center (2, – 3) and passes
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: The area of a circle is A = πr^2. If we can find the radius, then we can find the area of the circle. Recall …
In a certain sequence of 8 numbers, each number after the first…
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: Since each number in the 8-number sequence after the first is 1 more than the previous number and the first number is -5, the sequence …
Jackie has two solutions that are 2 percent sulfuric acid…
May 13, 2016
GMAT OFFICIAL GUIDE PS – Solution: We can begin by defining two variables: x = the number of liters of 2 percent solution y = the number of liters …
Alex deposited x dollars into a new account that earned 8
May 13, 2016
GMAT OFFICIAL GUIDE PS Solution: We start by determining the new value of the x dollars Alex deposited into his account that earned 8 percent annual interest. At the …
Working simultaneously and independently at an identical constant rate, 4 machines…
May 13, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given that 4 machines can produce a total of x units in 6 days. Since rate = work/time, the rate of the …