GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 14 Oct 2019, 18:43

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58320
A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and  [#permalink]

### Show Tags

28 Jan 2019, 08:13
00:00

Difficulty:

45% (medium)

Question Stats:

52% (02:27) correct 48% (02:12) wrong based on 33 sessions

### HideShow timer Statistics

A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and 12 m deep is dug in the field and the earth taken out is spread evenly over the field. Find the level of the field raised?

A. 35 cm
B. 50 cm
C. 60 cm
D. 65 cm
E. 100 cm

_________________
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 4987
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and  [#permalink]

### Show Tags

Updated on: 29 Jan 2019, 04:36
1
Bunuel wrote:
A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and 12 m deep is dug in the field and the earth taken out is spread evenly over the field. Find the level of the field raised?

A. 35 cm
B. 50 cm
C. 60 cm
D. 65 cm
E. 100 cm

Bunuel : answer options are in cm and given info is in m..
also correct answer choice seems to be missing

area of field ; 500*30 = 15000
vol of dug earth in tank ; 30*20*12 - 7200 m^3

area of field dug =30*20 = 600
15000-600 = 14400
7200/14400 = 0.5 ~ 50 cm IMO B
_________________
If you liked my solution then please give Kudos. Kudos encourage active discussions.

Originally posted by Archit3110 on 28 Jan 2019, 09:53.
Last edited by Archit3110 on 29 Jan 2019, 04:36, edited 1 time in total.
Intern
Joined: 21 Jan 2019
Posts: 1
Re: A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and  [#permalink]

### Show Tags

28 Jan 2019, 10:48
1
vol of dug earth from tank : 30*20*12 = 7200 m^3
area of field : total area of field - area of tank dug out : 500*30 - 30*20 = 15000 - 600 = 14400 m^2
level raised = vol. of earth/area = 7200/14400 = 0.5m = 50cm (Option B)
e-GMAT Representative
Joined: 04 Jan 2015
Posts: 3074
Re: A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and  [#permalink]

### Show Tags

29 Jan 2019, 04:31

Solution

Given:
• The length of field = 500 m
• The breadth of field = 30 m
• The length of tank = 30 m
• The breadth of tank = 20 m, and
• The height of tank = 12 m

To find:
• The level of field raised

Approach and Working:
• Volume of the tank = $$30 * 20 * 12 = 7200 m^3$$
• Area of field – area of tank = $$500 * 30 – 30 * 20 = 14400 m^2$$

Therefore, level of field raised = $$\frac{7200}{14400} m = 0.5 m = 50 cm$$

Hence, the correct answer is Option B

Answer: B

_________________
Re: A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and   [#permalink] 29 Jan 2019, 04:31
Display posts from previous: Sort by

# A field is 500 m long and 30 m broad. A tank 30 m long, 20 m broad and

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne