percents

Expert replies

alltimeacheiver: Master | Next Rank: 500 Posts; Posts: 183; Joined: Wed Feb 09, 2011 3:08 amFollowed by: 5 members; Location: Delhi; Thanked: 1 times

by alltimeacheiver » Thu May 05, 2011 12:36 am

A small pool filled only with water will require an additional 300 gallons of water in order to filled 80 percent of its capacity. If pumping in these additional 300 gallons will increase the amount of water in the pool by 30 percent, what is total capacity of the pool in gallons?

a 1000
b 1250

c 1300
d 1600
e 1625

ques the market value of certain x item decreased by 30 percent each year . If the machine purchased for 8000. what is market value after 2 years later?

a 8000
b 5600
c 3200
d 2400
e 800

I am not getting ans within options

Like this post

Source: Beat The GMAT — Problem Solving | Thu May 05, 2011 12:36 am

GMAT/MBA Expert

Anurag@Gurome: GMAT Instructor; Posts: 3835; Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members; Location: Milpitas, CA; Thanked: 1854 times; GMAT Score:770

by Anurag@Gurome » Thu May 05, 2011 1:22 am

A small pool filled only with water will require an additional 300 gallons of water in order to filled 80 percent of its capacity. If pumping in these additional 300 gallons will increase the amount of water in the pool by 30 percent, what is total capacity of the pool in gallons?

a 1000
b 1250
c 1300
d 1600
e 1625

Let us assume that initially the pool is filled with x gallons of water.
x + 300 = 80% of pool's capacity
It is given that pumping in 300 gallons will increase the amount of water in the pool by 30%, which implies 30% of x = 300 implies x = 1000
So, 1000 + 300 = 1300 = 80% of pool's capacity
So, the total capacity of pool in gallons = 1300/80% = 1300/0.80 = 1,625

The correct answer is e.

Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/

Like this post

GMAT/MBA Expert

Anurag@Gurome: GMAT Instructor; Posts: 3835; Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members; Location: Milpitas, CA; Thanked: 1854 times; GMAT Score:770

by Anurag@Gurome » Thu May 05, 2011 1:31 am

The market value of certain x item decreased by 30 percent each year . If the machine purchased for 8000. what is market value after 2 years later?

a 8000
b 5600
c 3200
d 2400
e 800

Though, it is not a properly worded question, I am assuming that "certain x item" is the machine.
Original price of machine = 8000
Now, the market value of machine decreases by 30% each year implies its price after 1 year = 8000 - (0.30 * 8000) = 8000 * 0.70 = 5600
Market price after 2 years = 5600 - (0.30 * 5600) = 5600 * 0.70 = 3,920

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

559 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review