Tag: data sufficiency

GMAT OFFICIAL GUIDE DS Solution: We are given that a and b are positive integers and we must determine: Is a/b < 9/11? or Is a/b <0.818181…? Statement One …

GMAT OFFICIAL GUIDE DS Solution: We need to determine whether at least 60 percent of the students in Pat’s class walk to school. Statement One Alone:  At least 60 …

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 OFFICIAL GUIDE DS Solution: We are given that for a certain car repair, the total charge consisted of a charge for parts, a charge for labor, and a …

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 …