5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
GMATPREP -DS
This topic has expert replies
-
clock60
- Legendary Member
- Posts: 759
- Joined: Mon Apr 26, 2010 10:15 am
- Thanked: 85 times
- Followed by:3 members
one of ideas here is to plug numbers
total income of the family=100
mr lee income=0,6*100=60
income of the rest of the family=40 (40+60=100)
in june mr lee income increased by 20%=60*1.2=72
the income of the rest is the same=40
so total family income in june=40+72=112
the part of mr lee income in total income=72/112=0,64*100=64%
total income of the family=100
mr lee income=0,6*100=60
income of the rest of the family=40 (40+60=100)
in june mr lee income increased by 20%=60*1.2=72
the income of the rest is the same=40
so total family income in june=40+72=112
the part of mr lee income in total income=72/112=0,64*100=64%
