Brian is dividing 50 marbles into 3 groups. How many marbles are in the largest of the 3 groups?
1. The sum of the 2 smaller groups of marbles is equal to the largest group of marbles
2. The smallest group contains 6 marbles
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50 marbles
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thephoenix
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let three groups be x,y and z each containing a,b and c marbles repectively and z is the largest group
s1) a+b=c
a+b+c=50(from question stem)
c+c=50(from s1)--->c=25
suff
s2) a=6 we dont know b and c insuff
s1) a+b=c
a+b+c=50(from question stem)
c+c=50(from s1)--->c=25
suff
s2) a=6 we dont know b and c insuff
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gmatmachoman
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@pheonix bhai,thephoenix wrote:let three groups be x,y and z each containing a,b and c marbles repectively and z is the largest group
s1) a+b=c
a+b+c=50(from question stem)
c+c=50(from s1)--->c=25
suff
s2) a=6 we dont know b and c insuff
what if they would have asked ,find the numbers in each group???
So will u use both??
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thephoenix
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yes def. since s1 gives the value of only one group and the sum of other two group , we need further information reagrading at least one of the other two.gmatmachoman wrote:@pheonix bhai,
what if they would have asked ,find the numbers in each group???
So will u use both??
which in this case is done by s2
so in that case C wud have been the ans
