Two teams A and B comprising of 3 members each take part : GMAT Data Sufficiency (DS)
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# Two teams A and B comprising of 3 members each take part

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Senior Manager
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Two teams A and B comprising of 3 members each take part [#permalink]

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30 Aug 2013, 21:01
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Difficulty:

85% (hard)

Question Stats:

46% (02:48) correct 54% (01:23) wrong based on 67 sessions

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Two teams A and B comprising of 3 members each take part in a Math competition. The test consists of 6 problems and if any member of a team solves 3 problems correctly, then the member wins a gold medal. Did any member of Team A win a gold medal?

1. The total number of correct solutions by both the teams together is 25
2. The number of correct solutions by members of Team A is 7 more than that of Team B
[Reveal] Spoiler: OA

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Re: Two teams A and B comprising of 3 members each take part [#permalink]

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23 Nov 2014, 12:46
I tried the problem in the following way:

Let team A consists of members as x,y,z
Let team B consists of members as p,q,r

statement 1- The total number of correct solutions by both the teams together is 25, as the total is 25 and the number of questions are 6, the worst case situation is that each member of team b solve all questions correctly, then team b points are 3 * 6 (number of questions), team a should have 7 points. taking possibilities of this situation
if x - 6, y- 1, and z -0
x- 5, y - 2, z -0
x - 4, y - 3, z- 0
x- 3 , y, -3, z -1 --> note that the numbers can be interchanged between x, y, and z and in either way, any member of team a solves 3 questions, therefor sufficient info.

Statement 2 -> it is just the second part of analysis of statement 1, therefore sufficient.

Re: Two teams A and B comprising of 3 members each take part   [#permalink] 23 Nov 2014, 12:46
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# Two teams A and B comprising of 3 members each take part

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