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A circular logo is enlarged to fit the lid of a jar. The new diameter

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Math Expert
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Joined: 02 Sep 2009
Posts: 59095
A circular logo is enlarged to fit the lid of a jar. The new diameter  [#permalink]

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New post 23 Oct 2019, 01:09
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

90% (01:42) correct 10% (00:57) wrong based on 20 sessions

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Joined: 18 Aug 2017
Posts: 5277
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
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Re: A circular logo is enlarged to fit the lid of a jar. The new diameter  [#permalink]

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New post 23 Oct 2019, 02:06
Bunuel wrote:
A circular logo is enlarged to fit the lid of a jar. The new diameter is 50 per cent larger than the original. By what percentage has the area of the logo increased?

A. 50
B. 80
C. 100
D. 125
E. 250


let earlier diameter = 2 , new diameter = 3
earlier radius ; 1 ; area pi and new radius ; 1.5 and area ; 2.25 pi
% ∆ ; 1.25/1 *100 ; 125
IMO D
GMAT Club Bot
Re: A circular logo is enlarged to fit the lid of a jar. The new diameter   [#permalink] 23 Oct 2019, 02:06
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A circular logo is enlarged to fit the lid of a jar. The new diameter

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