Hi bunuel

for stmt 2 to be sufficient, we need to assume that everyone participated in the contribution. It is not mentioned anywhere right?

Bunuel wrote:

tinki wrote:

If 25% of the company's employees contribute at least 4% of their salary to the Charity Fund, what percent of the company's employees contribute at least 5% of their salary to the Charity Fund?

1. 20% of the company's employees contribute at least 4% but less than 5% of their salary to the Charity Fund

2. 95% of the company's employees contribute less than 5% of their salary to the Charity Fund

(C) 2008 GMAT Club -

m18#18Can anybody show how to do this problem with

double set matrix? i tried and somehow failed

with A .

thaaanks ...

-------4------5-----

___X____Y_____Z_

X% contribute less than 4;

Y% contribute at least 4 but less than 5;

Z% contribute at least 5.

Note that these groups don't have intersections and X+Y+Z=100.

Given: Y+Z=25%. Question: Z=?

(1) Y=20% --> Y+Z=20+Z=25% --> Z=5%. Sufficient.

(2) X+Y=95% --> X+Y+Z=95+Z=100% --> Z=5%. Sufficient.