Author: Jeff Miller

GMAT OFFICIAL GUIDE DS Solution: We are given that lines k and m are parallel to each other, and when two lines are parallel they have the same slope. …

GMAT OFFICIAL GUIDE DS Solution: Let’s start by sketching square ABCD inscribed in circle O. We must also remember that the diagonal of the square is equal to the …

GMAT Guide Solution: Since we are given information about compound interest, we can use the compound interest formula: FV = PV(1 + r/n)^(nt), where FV = future value PV …

GMAT OFFICIAL GUIDE DS Solution: We need to determine the value of w^-2.  We must remember, that if we can determine a value for w, we also can determine …

GMAT OFFICIAL GUIDE DS Solution: We see that we have an overlapping set problem with two categories: 1) Own a fax machine 2) Own a laser printer We can …

GMAT OFFICIAL GUIDE DS Solution: We must determine whether rw = 0. The zero product property states that, in order for the product of r and w to equal …

GMAT OFFICIAL GUIDE DS Solution: We need to determine the range of selling prices of 30 wallets. Recall that the range of a set of numbers is the difference …

GMAT OFFICIAL GUIDE DS Solution: We are given that sequence S has 120 terms and we must determine the 105th term of S. Statement One Alone:  The first term …