Author: Scott Woodbury-Stewart

GMAT OFFICIAL GUIDE PS Solution: We first draw a diagram of our garden. The length of the rectangular garden is twice as long is it is wide. Thus, we …

GMAT OFFICIAL GUIDE PS Solution: To solve this question, we start by FOILing the right hand side of the given equation. 10y^2 = (x+2)(x-2) 10y^2 = x^2 – 4 …

GMAT OFFICIAL GUIDE PS Solution: The problem is easiest to solve by substituting numbers for n. We’ll try an odd number first and then an even number. For an …

GMAT OFFICIAL GUIDE PS Solution: The easiest way to solve the problem is to plug in some real numbers for a, b, and c. Since we know they are …

GMAT OFFICIAL GUIDE PS – Solution: We start by using the negative exponent rule. When a fractional base is raised to a negative exponent, we can rewrite the expression …

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. …

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 …

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 …