Search found 142 matches
- by bpgen
Tue Sep 14, 2010 6:18 am- Forum: Data Sufficiency
- Topic: if -2x>3y, is x negative?
- Replies: 3
- Views: 1238
Sequence number...
Sequence S consists of 24 non-zero integers. If each term in S after the second is the product of previous two terms, how many terms in S are negative?
1) The third term in S is positive
2) The fourth term in S is negative
OA B
- by bpgen
Wed Jun 30, 2010 6:23 am- Forum: Data Sufficiency
- Topic: Sequence number...
- Replies: 1
- Views: 1048
Remainder issue
if x and y are positive integers, what is the remainder when x is divided by y? (1) When x is divided by 2y, the remainder is 4 (2) When x+y is divided by y, the remainder is 4 OA B I'm not agree with OA, I would go for D, instead. (1)Let's say remainder is R and result is Z, then x=2y*Z + R => x=y*...
- by bpgen
Tue Jun 29, 2010 6:42 am- Forum: Data Sufficiency
- Topic: Remainder issue
- Replies: 1
- Views: 1104
- by bpgen
Sat Jun 19, 2010 7:46 am- Forum: Problem Solving
- Topic: work rates
- Replies: 3
- Views: 1122
work rates
Working independently, Susan can perform a certain task in 6 hr and Tom can perform it in 7 hr. If Susan and Tom work together at the task for 3 hr, at which point Susan leaves, how many hr will it take Tom to complete the task alone?
A-1/14
B-2/5
C-1/2
D-29/42
E-1
- by bpgen
Sat Jun 19, 2010 7:45 am- Forum: Problem Solving
- Topic: work rates
- Replies: 3
- Views: 1122
Just to add more:
In any evenly spaced set the arithmetic mean (average) is equal to the median and can be calculated by the formula mean=median=(a_1+a_n)/2, where a_1 is the first term and a_n is the last term
- by bpgen
Sat Jun 19, 2010 6:56 am- Forum: Problem Solving
- Topic: Average Problem
- Replies: 4
- Views: 1732
- by bpgen
Sat Jun 19, 2010 4:36 am- Forum: Problem Solving
- Topic: round trip
- Replies: 3
- Views: 1907
round trip
Maura drives to work in 40 minutes. She takes the same route to return home. If her average speed on trip home is half as fast as her average speed on the trip to work, how much time does she spend driving on the round trip?
A-1hr
B-1hr 15 mins
C-1 hr 20 mins
D-1 hr 40 mins
E- 2 hrs
- by bpgen
Sat Jun 19, 2010 4:35 am- Forum: Problem Solving
- Topic: round trip
- Replies: 3
- Views: 1907
- by bpgen
Fri Jun 18, 2010 6:38 pm- Forum: Problem Solving
- Topic: Rates
- Replies: 4
- Views: 1372
Rates
A riverboat leaves Mildura and travels upstream to Renmark at an average speed of 6 miles/hr. It returns by the same route at an average speed of 9 miles/hr. What is the average speed of the round trip, in miles/hr?
A- 7.0
B- 7.2
C- 7.8
D- 7.8
E- 8.2
- by bpgen
Fri Jun 18, 2010 6:36 pm- Forum: Problem Solving
- Topic: Rates
- Replies: 4
- Views: 1372
- by bpgen
Fri Jun 18, 2010 5:55 pm- Forum: Problem Solving
- Topic: At car dealership x...
- Replies: 4
- Views: 1487
At car dealership x...
At car dealership x, the total profit from sales increased by 10% over previous year, while the number of cars sold decreased by 10% over previous year, Approximately, what was the average % increased in profit per car over previous year?
A-18%,
B-20%,
C-22%,
D-23%,
E-25%
- by bpgen
Fri Jun 18, 2010 5:52 pm- Forum: Problem Solving
- Topic: At car dealership x...
- Replies: 4
- Views: 1487
- by bpgen
Wed Jun 16, 2010 7:12 pm- Forum: Problem Solving
- Topic: What is the minimum value of x*y^2 ?
- Replies: 4
- Views: 979
What is the minimum value of x*y^2 ?
if -1/2<= x<=-1/3 and -1/4<= y<=-1/5, What is the minimum value of x*y^2 ?
A) -1/75
B) -1/50
C) -1/48
D) -1/32
E) -1/16
- by bpgen
Wed Jun 16, 2010 7:03 pm- Forum: Problem Solving
- Topic: What is the minimum value of x*y^2 ?
- Replies: 4
- Views: 979
Just need bit clarification on option C,
It should be 'have been increased' instead of 'have increased', what's say?
Because, profits could not increase itself, someone increased profits, Correct me if I'm wrong.
- by bpgen
Sun Apr 18, 2010 5:08 am- Forum: Sentence Correction
- Topic: Company profits and cost cutting measures!
- Replies: 15
- Views: 14044