Percents 1

This topic has expert replies
Source: — Problem Solving |

Master | Next Rank: 500 Posts
Posts: 118
Joined: Wed Mar 16, 2011 12:51 am
Location: New Delhi, India
Thanked: 12 times
Followed by:1 members

by pankajks2010 » Tue May 10, 2011 6:50 am
Evaluating Statement 1: Let x be initial amount of sugar in the jar and y be amount of sugar removed from the jar. Then, we need to find ((x-y)/x)*100 to determine the percent decrease.

Statement 1 says the reduced amount needs to be increase by 30% to fill up the jar again.
Thus, 30%(x-y)=y. Rearranging this, we can determine the value of (x-y)/x). Thus, statement 1 is sufficient.

Evaluating Statement 2: As we do not know, how many cups of sugar is there in the jar, we cannot determine the percent decrease. thus, statement 2 alone is insufficient.

Answer A