Author: Jeff Miller

GMAT OFFICIAL GUIDE PS Solution: Since the order of the books in her list matters, we use permutation. Thus, the number of ways 4 books can be chosen and …

GMAT OFFICIAL GUIDE PS Solution: We are given two decimals: 0.1X and 0.02Y To make 0.1X the greatest, we can let X = 9 and we have: 0.19 To …

GMAT OFFICIAL GUIDE PS Solution: Let’s test each answer choice: A) From Day 1 to Day 2 |(12 – 20)/20| x 100 = |-8/20| x 100 = 40% B) …

GMAT OFFICIAL GUIDE PS Solution: Let’s take 6% of each value budgeted: Payroll: 110,000 x 0.06 = 6600 Since 117000 – 110,000 = 7,000, the amount spent differed by …

GMAT OFFICIAL GUIDE PS Solution: After 17 trips, the worker has carried 17 x 4 = 68 jugs. From those 68 jugs, 68/7 = 9 cartons have been filled, …

GMAT OFFICIAL GUIDE PS Shawana made a schedule for reading books during 4 weeks (28 days) of her summer vacation… Solution: We will list the number of days it …

GMAT OFFICIAL GUIDE PS Solution: We can simplify the given expression by multiplying by 180 and we have: 60 + 45 + 36 + 30 = 20r + 15r …

GMAT OFFICIAL GUIDE PS Solution: Let t represent the time passed between the departure of Al (11:00 a.m.) and the retrieval of data by the dispatcher. Since Ben left …