In this case, we are only interested with the number of
blue gumballs and yellow gumballs. In the given, it is stated that there are 5%
yellow gumballs while the percentage of the blue gumball is yet to be
calculated.
The total percent should be 100%, therefore the % blue
gumballs is:
% blue gumballs = 100% - 20% - 30% - 5% - 10%
% blue gumballs = 35%
Therefore the total number of each gumballs for each color is:
yellow gumballs = 120 * 0.05 = 6
blue gumballs = 120 * 0.35 = 42
Hence, 42 – 6 = 36
Therefore there are 36 more blue gumballs than there are
yellow gumballs.
