gmatPrep DS

This topic has expert replies
Source: — Data Sufficiency |

Legendary Member
Posts: 708
Joined: Sun Jun 01, 2008 4:59 am
Location: USA
Thanked: 13 times
Followed by:1 members

by niraj_a » Mon Dec 08, 2008 6:06 pm
vladmire,

the key here is that the distance remains the same. take 100 as D, enter 20 mins as the time and find the rate. then increase that rate by 25% and find the time for Friday. thus, C sufficient.