## Search found 53 matches

##### Percentages

Hi could you please help me out with this question

In a certain class the boys were reduced by 20% and the girls by 30%. After the reduction the total number of students in the class is 260. How many students were in the class before the reduction?

- by kaf

Mon Jul 27, 2009 4:16 pm- Forum: Problem Solving
- Topic: Percentages
- Replies:
**1** - Views:
**955**

##### DS question

For each month of next year, Company R's monthly revenue target is x dollars greater than its monthly revenue target for the preceding month. What is Company R's revenue target for March of next year? 1 Company R's revenue target for December of next year is 310,000 2 Company R's revenue target for ...

- by kaf

Tue Apr 14, 2009 1:50 pm- Forum: Data Sufficiency
- Topic: DS question
- Replies:
**3** - Views:
**1549**

- by kaf

Mon Apr 13, 2009 3:06 pm- Forum: Data Sufficiency
- Topic: Between A and B
- Replies:
**9** - Views:
**5555**

##### range question

Hi can someone please help explain the solution to this

The number of years of service of the eight employees in a production department are 15, 10, 9, 17, 6, 4, 14 and 16. What is the range in the number of years of service of the eight employees?

A. 10

B. 11

C. 12

D. 13

E. 14

Thanks

- by kaf

Sun Apr 12, 2009 3:52 pm- Forum: Problem Solving
- Topic: range question
- Replies:
**2** - Views:
**1242**

Krisraam can you please elaborate on the steps yo your solutionkrisraam wrote:x = y ( 1000/(60*60))

y = 18x/5

Thanks

Raama

thanks

- by kaf

Thu Apr 09, 2009 2:22 am- Forum: Problem Solving
- Topic: x meters per second is y kilometers per hour...
- Replies:
**8** - Views:
**7486**

Can someone please confirm this if this is standard formulaaatech wrote:QS is height of the triangle PQR...

Ht of equilateral traingle is calculated by formula

(root3)/2 * side

This is a std formula

thanks

- by kaf

Wed Apr 08, 2009 1:43 pm- Forum: Problem Solving
- Topic: GMAT Prep (Pract2) Equilateral Triangle
- Replies:
**9** - Views:
**1842**

This question has been answered and explained thoroughly here

http://www.beatthegmat.com/gmat-prep-qu ... 21502.html

- by kaf

Wed Apr 08, 2009 4:20 am- Forum: Problem Solving
- Topic: certain sequence is given
- Replies:
**1** - Views:
**697**

This question has been answered and explained thoroughly here

http://www.beatthegmat.com/greatest-pri ... 14712.html

- by kaf

Wed Apr 08, 2009 4:15 am- Forum: Problem Solving
- Topic: the greatest prime factor
- Replies:
**1** - Views:
**656**

- by kaf

Wed Apr 08, 2009 3:47 am- Forum: Problem Solving
- Topic: PS
- Replies:
**10** - Views:
**1545**

I have serious problems with exponent questions.moutar wrote:(3^(x-1))^3

= 3^(3x-3)

= 3^3x /3^3

= ((3^6x)^1/2)/27

= (8100^1/2)/27

= 90/27

= 10/3 = D

Much nicer.

Moutar can you please explain how

= 3^3x /3^3 transformed to become

= ((3^6x)^1/2)/27

thanks in advance

- by kaf

Wed Apr 08, 2009 2:29 am- Forum: Problem Solving
- Topic: PS
- Replies:
**10** - Views:
**1545**

##### percentages again

With the success of the MP3 format, CD retailer Musicfest is going out of business. At first the store discounted all its albums 40%. Today, the store is adding an additional discount of 25% off the already discounted price of albums. The two discounts are equal to a total discount of: A.70% B.55% C...

- by kaf

Thu Apr 02, 2009 11:32 pm- Forum: Problem Solving
- Topic: percentages again
- Replies:
**2** - Views:
**932**

##### Percentages

Can someoone please help in explaning the solution to this question At the candy shop, Calvin purchased 24 chocolate bars and 10 gumdrops. If the cost of each chocolate bar is ten times the cost of each gum drop, what percent of the total purchase price was the cost of all of the gum drops? A.8% B.6...

- by kaf

Thu Apr 02, 2009 11:31 pm- Forum: Problem Solving
- Topic: Percentages
- Replies:
**2** - Views:
**909**

##### Cricles

Solution and explanation please

Increasing a circle's radius by 20%, causes the circle's area to increase by how much?

A.100%

B.60%

C.44%

D.40%

E. 25%

- by kaf

Thu Apr 02, 2009 2:34 pm- Forum: Problem Solving
- Topic: Cricles
- Replies:
**3** - Views:
**987**

Stuart could you please post the diagram you used for your solution so some of us can understand the solution

thanks

- by kaf

Thu Apr 02, 2009 11:28 am- Forum: Problem Solving
- Topic: ps
- Replies:
**6** - Views:
**2635**

I think the answer is B this is how i solve it though D = RT After 3 hours there would be a distance of 18 miles between the two cyclist Distance covered by first cyclist D = 6*3 = 18 The difference in speeds at which the two are cycling is 4 mph Therefore we assume Second cyclist has to cover a dis...

- by kaf

Wed Apr 01, 2009 4:40 pm- Forum: Problem Solving
- Topic: Diff. Avg Speeds
- Replies:
**3** - Views:
**1007**