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

It is currently 30 Mar 2020, 18:33

Close

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

The value of a silver coin varies directly as the square of its diamet

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 62353
The value of a silver coin varies directly as the square of its diamet  [#permalink]

Show Tags

New post 28 Dec 2019, 00:31
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

55% (02:29) correct 45% (01:49) wrong based on 20 sessions

HideShow timer Statistics

The value of a silver coin varies directly as the square of its diameter, when thickness is constant and varies directly as its thickness when diameter remains constant. Two silver coins have the diameters in the ratio 4 : 3. Find the ratio of the thickness if the value of the first coin is four times the value of the second coin.

A. 3 : 4
B. 4 : 3
C. 16 : 3
D. 9 : 4
E. 1 : 3

_________________
DS Forum Moderator
User avatar
V
Joined: 19 Oct 2018
Posts: 1419
Location: India
Premium Member
Re: The value of a silver coin varies directly as the square of its diamet  [#permalink]

Show Tags

New post 28 Dec 2019, 14:54
\(V= k*d^2*t\)

\(\frac{V_1}{V_2}= \frac{k*(D_1)^2*t_1}{ k*(D_2)^2*t_2}\)

\(4= \frac{16*t_1}{9*t_2}\)

\(\frac{t_1}{t_2}= \frac{9}{4}\)




Bunuel wrote:
The value of a silver coin varies directly as the square of its diameter, when thickness is constant and varies directly as its thickness when diameter remains constant. Two silver coins have the diameters in the ratio 4 : 3. Find the ratio of the thickness if the value of the first coin is four times the value of the second coin.

A. 3 : 4
B. 4 : 3
C. 16 : 3
D. 9 : 4
E. 1 : 3
GMAT Club Bot
Re: The value of a silver coin varies directly as the square of its diamet   [#permalink] 28 Dec 2019, 14:54
Display posts from previous: Sort by

The value of a silver coin varies directly as the square of its diamet

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





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