GMAT OFFICIAL GUIDE PS – √80 + √125 =
May 9, 2015
GMAT OFFICIAL GUIDE PS – √80 + √125 = Solution: To solve the problem we must simplify the radicals. Radicals should be simplified whenever possible. Since the square root …
Tag: GMAT OG 2018
How many integers n are there such that 1< 5n +5 < 25?
May 9, 2015
GMAT OFFICIAL GUIDE PS Solution: 1< 5n + 5 < 25 is a compound inequality. Compound inequalities often need to be manipulated, and we can use the rules of …
Car X averages 25.0 miles per gallon of gasoline and Car Y…
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve this problem we will need to use the formula: rate x gallons = distance, which means: gallons = distance/rate We need to …
The sum 7/8 + 1/9…
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s first determine the sum of 7/8 and 1/9. 7/8 + 1/9 Getting a common denominator of 72 gives us: 63/72 + 8/72 =71/72 …
If n is an integer, which of the following…
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve this question, we need to consider a few odd/even rules. 1) (even + even) or (odd + odd) = even 2) even …
1/(0.75 – 1) =
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: We start by subtracting 1 from 0.75 in the denominator of 1/(0.75 – 1). This yields: 1/-0.25 Next we convert 0.25 to a fraction, …
John has 10 pairs of matched socks. If he loses 7 individual…
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s label each pair of socks with letters. AA = pair 1 BB = pair 2 CC = pair 3 DD = pair 4 …
A student’s average (arithmetic mean) test score on 4 tests…
May 8, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve, we use the average equation: average = sum/quantity We don’t know the individual scores for each of the first 4 tests, but …