Search found 30 matches
work & time
How many hours does it take some boys and girls in a camp to put up the tent? I. There are 4 boys and 7 girls. II. A girl can put up the tent in 5 hours and a boy can put up the tent in 3 hours.
A)l B)2 C)3 D)4
- by [email protected]
Thu Jul 01, 2010 7:36 pm- Forum: Problem Solving
- Topic: work & time
- Replies: 1
- Views: 2618
- by [email protected]
Thu Jul 01, 2010 7:23 pm- Forum: Problem Solving
- Topic: average
- Replies: 3
- Views: 3095
area
If the diagonal and the area of a rectangle are 25 m and 168 m2, what is the length of the rectangle?
A. 17 m
B. 31 m
C. 12 m
D. 24 m
- by [email protected]
Thu Jul 01, 2010 6:02 am- Forum: Problem Solving
- Topic: area
- Replies: 8
- Views: 6507
interest
What will Rs.1500 amount to in three years if it is invested in 20% p.a. compound interest, interest being compounded annually?
A. 2400
B. 2592
C. 2678
D. 2540
- by [email protected]
Thu Jul 01, 2010 6:02 am- Forum: Problem Solving
- Topic: interest
- Replies: 4
- Views: 1299
average
on Thursday, Friday and Saturday was 240. If the temperature on Saturday was 270, what was the temperature on Wednesday?
A. 240
B. 210
C. 270
D. 300
- by [email protected]
Thu Jul 01, 2010 6:01 am- Forum: Problem Solving
- Topic: average
- Replies: 3
- Views: 3095
probability
In a group of 8 semifinalists, all but 2 will advance to the final round. If in the final round only the top 3 will be awarded medals, then how many groups of medal winners are possible?
A. 20
B. 56
C. 120
D. 560
E. 720
- by [email protected]
Thu Jul 01, 2010 6:01 am- Forum: Problem Solving
- Topic: probability
- Replies: 9
- Views: 6286
probability
In a group of 400 readers who read science fiction or literacy works or both, 250 read science fiction and 230 read literacy works. How many read both science fiction and literacy works?
A) 80 B) 160 C) 220 D) 400
- by [email protected]
Wed Jun 30, 2010 9:13 pm- Forum: Problem Solving
- Topic: probability
- Replies: 1
- Views: 2468
edit: [overlapping sets]
) At an international conference, 100 delegates spoke English, 40 spoke French, and 20 spoke both English and French. How many delegates could speak at least one of these two languages?
A) 110 B) 100 C) 140 D) 120
- by [email protected]
Wed Jun 30, 2010 9:12 pm- Forum: Problem Solving
- Topic: edit: [overlapping sets]
- Replies: 5
- Views: 4098
probability
A dance instructor conducts annual workshops in which he holds sessions for basic learners and trainers. In a particular year, 2000 people attended the workshop. 1500 participated as learners and 800 as trainers. How many participated as only trainers?
- by [email protected]
Wed Jun 30, 2010 9:12 pm- Forum: Problem Solving
- Topic: probability
- Replies: 3
- Views: 6534
probablity
A group of 50 students were required to clear 2 tasks, one in rock-climbing and the other in bridge crossing during an adventure sports expedition. 30 students cleared both the tasks. 37 cleared bridge crossing, 38 students cleared rockclimbing. How many students could not clear any task?
- by [email protected]
Wed Jun 30, 2010 9:11 pm- Forum: Problem Solving
- Topic: probablity
- Replies: 2
- Views: 5543
probability
70 students are required to paint a picture. 52 use green color and some children use red, 38 students use both the colors. How many students use red color? A) 24 B) 42 C) 56 D)70 hi friends tell me wat this type probs s called. also tell me any formula to work out these type of probs.
- by [email protected]
Wed Jun 30, 2010 9:11 pm- Forum: Problem Solving
- Topic: probability
- Replies: 7
- Views: 5344
probablity
A class consists of 100 students, 25 of them are girls and 75 boys; 20 of them are rich and remaining poor; 40 of them are fair complexioned. The probability of selecting a fair complexioned rich girl is:
A. 0.05
B. 0.04
C. 0.02
D. 0.08
- by [email protected]
Wed Jun 30, 2010 6:57 pm- Forum: Problem Solving
- Topic: probablity
- Replies: 1
- Views: 4879
work & time
if the ratio of work done by (x-1) men in (x+1)days to the work done by (x+2)men in (x-1)days is 9:10, then x is equal to
A. 5
B. 6
C. 7
D. 8
- by [email protected]
Wed Jun 30, 2010 6:56 pm- Forum: Problem Solving
- Topic: work & time
- Replies: 1
- Views: 5287
volume and surface area
Let A and B be two solid spheres such that the surface area of B is 300% higher than the surface area of A. The
volume of A is found to be k% lower than the volume of B. The value of k must be
A. 85.5
B. 92.5
C. 90.5
D. 87.5
- by [email protected]
Wed Jun 30, 2010 6:56 pm- Forum: Problem Solving
- Topic: volume and surface area
- Replies: 5
- Views: 8695
average
The average age of 8 persons in a committee is increased by 2 years when two men aged 35 years and 45 years
are substituted by two women. The average age of these two women is:
- by [email protected]
Wed Jun 30, 2010 6:55 pm- Forum: Problem Solving
- Topic: average
- Replies: 3
- Views: 9838