Author: Jeff Miller

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 …

GMAT OFFICIAL GUIDE PS Solution: We are given that operation Ө is defined by aӨb = (a-b)/(a+b). We are also given that aӨc = 0; thus, according to the …

GMAT OFFICIAL GUIDE PS Solution: We start by calculating the median of the numbers of list I: 3, 6, 8, 19. We see that the numbers in the list …

GMAT OFFICIAL GUIDE PS Solution: Let’s isolate x in both inequalities, starting with x + 6 > 10. x + 6 > 10 x > 4 Next we isolate …

GMAT OFFICIAL GUIDE PS Solution: We are given that a = -0.3; what we must keep in mind in this problem is that we are really being tested on …

GMAT OFFICIAL GUIDE PS Solution: To solve, we need to simplify the equation √(r/s) = s. We first want to eliminate the square root, so we square both sides, …

GMAT OFFICIAL GUIDE PS Solution: This is called a “defined function” problem. The parallel lines mean intrinsically nothing, except to establish a relationship between a^k and b. We are …

GMAT OFFICIAL GUIDE PS Solution: To solve, we want to get the bases the same. Thus we need to break 25^n into prime factors. 25^n = (5^2)^n = 5^(2n) …