Percentage Question

[gmat.raj]

of the members of a marching band, what percentage are boys who play trombone?
1.30% of the members of the band play trombone
2.60% of the members of the band are boys.

[d2rockstar]

Originally Posted by gmat.raj

of the members of a marching band, what percentage are boys who play trombone?
1.30% of the members of the band play trombone
2.60% of the members of the band are boys.

Both the statements together are insufficient

Staement 1: say let there be 100 members, we know that 30 play trombone but we don't know the number of boys

Statement 2: from this statement say out of 100, 60 are boys but we don't know how many of them play trombone

combine 1 & 2 we know 60 are boys but we don't know what % of them is playing trombone

[rajatmeh]

yes (E)

[gmat.raj]

yes E. correct explanation.

[nitya34]

agreed E

matrix method

----- Play------Dont Play-----Total
Boy.....A...............?..............0.60x

Girl......?...............?..............0.40x
--------------------------------------
.........0.30x..........?..............x


we need A/x

[finsisher]

E it is.. overlapping set question,. no information on overlap

[eravi11]

Yep..one more vote for E..

[madhur_ahuja]

Clear E

[gmat.raj]

thank you all. yes its E.

Good explanation from d2rockstar and nitya. thanks