If 1 + 1/x = 2 – 2/x, then x =…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: We need to simplify the equation 1 + 1/x = 2 – 2/x. We start by adding 2/x to both sides of the equation. …
Lois has x dollars more than Jim has, and together they have…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve, we will set up two equations. Let’s start by defining two variables. J = number of dollars Jim has L = number …
If m⁻¹ = -⅓…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: Since we know that m^-1 = -1/3 and m^-2 = (m^-1)^2, then m^-2 = (-1/3)^2 = 1/9. Answer: D
The figure above shows a circular flower bed…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: The circular path (i.e., the shaded region) is called an annulus in geometry. Basically an annulus is a ring-shaped figure bounded by two concentric …
A committee is composed of w women and m men. If 3 women and…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve the problem we must remember that: probability = (number of favorable outcomes)/(total number of outcomes) In the problem we are being asked …
If (4 – x)/(2 + x) = x, what is the value of x^2 + 3x -4
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: We start by simplifying the given equation, (4-x)/(2+x) = x. We first multiply both sides by 2+x. Thus we have: 4 – x = …
A restaurant meal cost $35.50 and there was no tax…
May 21, 2015
A restaurant meal cost $35.50 and there was no tax… Solution: To solve, we can set up two equations, one for a tip of 10% and another for a …
If the operation @ is defined by x@y=(xy)^1/2 for all …
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that the operation ⊙ is defined by x⊙y = √(xy) for all positive numbers. We are next given that (5⊙45)⊙60. Following …