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The length and breadth of a rectangle are 2.4 units and 3.6 units

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Director
Director
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V
Joined: 18 Feb 2019
Posts: 602
Location: India
GMAT 1: 460 Q42 V13
GPA: 3.6
The length and breadth of a rectangle are 2.4 units and 3.6 units  [#permalink]

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New post 23 Mar 2019, 00:18
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A
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Difficulty:

  55% (hard)

Question Stats:

50% (02:02) correct 50% (01:41) wrong based on 16 sessions

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The length and breadth of a rectangle are 2.4 units and 3.6 units respectively. If A is the area obtained by first multiplying the dimensions and then rounding the product to the nearest integer, and A* is the area obtained by first rounding each dimension to the nearest integer and then multiplying them, by what percentage is A* lesser or greater than A?

A. 2.5%
B. 4.1%
C. 9.1%
D. 11.1%
E. 12.5%
Senior Manager
Senior Manager
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Joined: 25 Feb 2019
Posts: 335
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Re: The length and breadth of a rectangle are 2.4 units and 3.6 units  [#permalink]

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New post 23 Mar 2019, 01:02
IMO D .

area A = 2.4*3.6= 8.64 ~ 9

A* = 2*4 = 8

so diff = 1


% = (1/9)*100 = 11.1 %


IMO D

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GMAT Club Bot
Re: The length and breadth of a rectangle are 2.4 units and 3.6 units   [#permalink] 23 Mar 2019, 01:02
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The length and breadth of a rectangle are 2.4 units and 3.6 units

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