GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

 It is currently 03 Jun 2020, 20:57

### 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

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 building that is 150 ft tall casts a shadow of 20 feet long. At the

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 64233
A building that is 150 ft tall casts a shadow of 20 feet long. At the  [#permalink]

### Show Tags

30 Jul 2019, 04:39
00:00

Difficulty:

5% (low)

Question Stats:

97% (00:47) correct 3% (01:25) wrong based on 32 sessions

### HideShow timer Statistics

A building that is 150 feet tall casts a shadow of 20 feet long. At the same time a tree casts a shadow of 2 feet. How tall is the tree?

A. 10
B. 15
C. 20
D. 25
E. 30

_________________
CR Forum Moderator
Joined: 18 May 2019
Posts: 811
Re: A building that is 150 ft tall casts a shadow of 20 feet long. At the  [#permalink]

### Show Tags

30 Jul 2019, 05:00
If height of 150 : 20
then h : 2
h=(150*2)/20=15ft

Posted from my mobile device
Intern
Joined: 08 Jan 2017
Posts: 21
Location: India
GMAT 1: 630 Q45 V31
GMAT 2: 670 Q48 V34
GPA: 4
WE: Engineering (Computer Software)
Re: A building that is 150 ft tall casts a shadow of 20 feet long. At the  [#permalink]

### Show Tags

05 Aug 2019, 02:21
Shadow is 20 ft --> when the height is 150 ft

therefore,
when the Shadow is 2 ft --> height = (150/20) * 2 = 15 ft
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 10651
Location: United States (CA)
Re: A building that is 150 ft tall casts a shadow of 20 feet long. At the  [#permalink]

### Show Tags

11 Aug 2019, 18:19
Bunuel wrote:
A building that is 150 feet tall casts a shadow of 20 feet long. At the same time a tree casts a shadow of 2 feet. How tall is the tree?

A. 10
B. 15
C. 20
D. 25
E. 30

We can use the proportion of:

150/20 = n/2

300 = 20n

n = 15

_________________

# Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
202 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Re: A building that is 150 ft tall casts a shadow of 20 feet long. At the   [#permalink] 11 Aug 2019, 18:19