Search found 9 matches
- by jmtkrs10
Mon Aug 11, 2008 6:56 pm- Forum: Data Sufficiency
- Topic: Exponents
- Replies: 1
- Views: 1385
Average Height
What is the average height of the n people in a certain group?
(1) Average height of (n/3) tallest people in the group is 6ft 2.5in and the average height of the rest of the people in the group is 5ft 10in.
(2) Sum of the heights of the n people is 178 ft 9 inches.
OA - A
Thanks!
- by jmtkrs10
Mon Aug 11, 2008 6:53 pm- Forum: Data Sufficiency
- Topic: Average Height
- Replies: 4
- Views: 5232
Square root and absolute value
Is sqrt(x-3)^2=3-x
(1) x does not equal 3
(2) -x*abs(x)>0
OA - B
Thanks!
- by jmtkrs10
Sat Aug 09, 2008 11:39 pm- Forum: Data Sufficiency
- Topic: Square root and absolute value
- Replies: 2
- Views: 6117
- by jmtkrs10
Sat Aug 09, 2008 11:27 pm- Forum: Data Sufficiency
- Topic: GmatPrep DS - Geom
- Replies: 3
- Views: 1601
- by jmtkrs10
Mon Aug 04, 2008 9:29 pm- Forum: Problem Solving
- Topic: Similar Triangles
- Replies: 1
- Views: 1202
- by jmtkrs10
Fri Jul 25, 2008 7:52 am- Forum: Problem Solving
- Topic: Constant growth
- Replies: 3
- Views: 1524
Constant growth
When a certain tree was first planted, it was 4 feet tall, and the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree was 1/5 taller than it was at the end of the 4th year. By how many feet did the height of the tree increase each y...
- by jmtkrs10
Thu Jul 24, 2008 10:20 pm- Forum: Problem Solving
- Topic: Constant growth
- Replies: 3
- Views: 1524
- by jmtkrs10
Thu Jul 24, 2008 8:29 am- Forum: Problem Solving
- Topic: Functions
- Replies: 3
- Views: 2468
Functions
For which of the following functions is f(a+b)=f(a)+f(b) for all positive numbers a and b?
A. f(x) = x^2
B. f(x) = x+1
C. f(x) = √x
D. f(x) = 2/x
E. f(x) = -3x
OA - E
- by jmtkrs10
Wed Jul 23, 2008 9:09 pm- Forum: Problem Solving
- Topic: Functions
- Replies: 3
- Views: 2468