√(4.8 x 10^9) is closest in value to…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given √(4.8 x 10^9), and we need to determine the answer choice that is closest in value. We first simplify the expression …
If xy ≠ 0 and x^2y^2 − xy = 6, which of the following could be y in…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given the equation, (x^2)(y^2) – xy = 6, and, although it may not be obvious, the equation is a quadratic-format equation. Thus, …
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 the figure shown, the triangle is inscribed in…
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: Let’s begin by sketching the given picture. We are given that triangle ABC is inscribed in the semicircle. Since a triangle inscribed in a …
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 = …
If k is an integer and (0.0025)(0.025)(0.00025) × 10^k is an integer
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given the expression: 0.0025 x 0.025 x 0.00025 x 10^k = integer To determine the least possible value of k, we want …