If 5 – 6/x = x, then x has how many possible values…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: We need to simplify the equation 5 – 6/x = x. We start by multiplying the entire equation by x and we obtain: 5x …
Tag: GMAT OG 2018
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
David has d books, which is 3 times as many as Jeff…
May 21, 2015
GMAT OFFICIAL GUIDE PS – Solution: Although we could plug in a real value for d, the problem can be just as easily solved by setting up equations. So …
Which of the following is equivalent to the pair of…
May 21, 2015
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 …
If s > 0 and (r/s)^1/2=s, what what is r in terms of s
May 21, 2015
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, …
For the positive integers a, b, and k, a^k||b means that a^k
May 21, 2015
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 …
According to the chart shown, which of the following is…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: An easy way to determine which data value is the median is to take the total number of shipments, add 1, and then divide …
What is the smallest integer n for which 25^n > 5^12 ?
May 21, 2015
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) …