According to a certain estimate, the depth N(t), in centimeters, of…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given that at t hours past 2:00 a.m., the depth of the water in a tank is determined by the formula N(t)= …
Author: Scott Woodbury-Stewart
The sum of all the integers k…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We must determine the sum of the consecutive integers from -25 to 23, inclusive. To determine the sum we can use the formula sum …
The number line shown contains three points R, S, and T…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: Looking at the given number line, we see that point R is to the left of zero and points S and T are to …
For a party, three solid cheese balls with diameters of 2 inches
May 10, 2016
GMAT Guide Solution: We first need to determine the volume of each individual cheese ball. We have 3 cheese balls of diameters of 2, 4, and 6 inches, respectively. …
The cost C, in dollars, to remove p percent of a certain pollutant
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: The cost to remove 90 percent of the pollutant is determined by letting p = 90 in the cost formula: 100,000(90)/(100 – 90) = …
The figure shown above represents a modern painting…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given a painting that has 4 different colored rectangles, each with a length of l and a width of w. We are …
In a recent election, Ms. Robbins received 8,000 votes cast by
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given that Ms. Robbins received 8,000 votes from independent voters and 10% of votes cast by non-independent voters. We are also given …
If a( a + 2) = 24 and b( b + 2) = 24
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: To solve, we must determine the values of a and b. We are given a(a+2) = 24 So: a^2 + 2a – 24 = …