|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
29 Nov 2017, 23:05
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
80% (00:43) correct
20%
(00:53)
wrong
based on 49
sessions
History
Date
Time
Result
Not Attempted Yet
Six balls, each of radius 5 centimeters, are placed side by side in a straight row with adjacent balls touching. What is the distance, in centimeters, between the center of the first ball and the center of the last ball?
(A) 40
(B) 45
(C) 50
(D) 55
(E) 60
(A) 40
(B) 45
(C) 50
(D) 55
(E) 60
29 Nov 2017, 23:26
Kudos
Bookmarks
C.
The distance is r+2r+2r+2r+2r+r. Here r=5
Solving we get 50
Sent from my iPhone using GMAT Club Forum
The distance is r+2r+2r+2r+2r+r. Here r=5
Solving we get 50
Sent from my iPhone using GMAT Club Forum
29 Nov 2017, 23:37
Kudos
Bookmarks
Bunuel
The distance = 4*10 + 2*5 = 50
C
Attachments
circles.jpg [ 22.51 KiB | Viewed 1688 times ]
