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 …
An operation @ is defined by the equation a@b = (a – b) / (a…
May 21, 2015
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 …
If the median of the numbers in list I above is equal to the…
May 21, 2015
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 …
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 …
The ratio of the length to the width of a rectangular advertising…
May 21, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s first set up our ratio using variable multipliers. length : width = 3.3x : 2x We are given that the width is 8 …
If a = -0.3, which of the following…
May 21, 2015
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 …