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# What is the maximum length of a rod, with marginal thickness, that can

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Senior RC Moderator
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 2263
Location: Pakistan
GPA: 3.39
What is the maximum length of a rod, with marginal thickness, that can  [#permalink]

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14 Oct 2018, 10:06
00:00

Difficulty:

25% (medium)

Question Stats:

79% (00:57) correct 21% (00:39) wrong based on 50 sessions

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What is the maximum length of a rod, with marginal thickness, that can be kept in a rectangular box B?

(1) The length of the box is 6 and the height is 5

(2) The breadth of the box is 4 and the height is 5

EG

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Joined: 02 Aug 2009
Posts: 7335
Re: What is the maximum length of a rod, with marginal thickness, that can  [#permalink]

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14 Oct 2018, 17:29
1
What is the maximum length of a rod, with marginal thickness, that can be kept in a rectangular box B?

It has to be the diagonal of the box, so we require $$\sqrt{L^2+B^2+H^2}$$

(1) The length of the box is 6 and the height is 5
Insufficient

(2) The breadth of the box is 4 and the height is 5
We don't know the length
Insufficient

Combined
All three dimensions known
Sufficient

C
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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html
4) Base while finding % increase and % decrease : https://gmatclub.com/forum/percentage-increase-decrease-what-should-be-the-denominator-287528.html

GMAT Expert

Re: What is the maximum length of a rod, with marginal thickness, that can   [#permalink] 14 Oct 2018, 17:29
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