Let the weight of the candy bar was 100 gm and Price was $ 100. per gm price = $ 1/gm
Reduced weight = 80 gm, but the price of the bar is still $ 100.
New per gm price = 100/80 = $ 1.25.
% increase in price (from 1 to 1.25) = 25%
percentage problem.. from GMAT prep
This topic has expert replies
Source: Beat The GMAT — Problem Solving |

















