Let the total number of gum balls in the jar be x, then the number of blue balls in the jar is 0.2x and the number of green balls is 10 + 0.2x and the number of red balls are 0.5(0.2x) = 0.1x.
Let the initial number of yellow balls in the jar be y, then
The initial number of white balls was 0.275x.
Thus,
Thus, the initial number of yellow balls was 0.175x = 0.175(200) = 35.
The initial number of white balls was 0.275x = 0.275(200) = 55.
One-fifth of white balls = 1/5(55) = 11.
Therefore, the number of yellow balls in the jar was 35 + 11 = 46.
Let the initial number of yellow balls in the jar be y, then
The initial number of white balls was 0.275x.
Thus,
Thus, the initial number of yellow balls was 0.175x = 0.175(200) = 35.
The initial number of white balls was 0.275x = 0.275(200) = 55.
One-fifth of white balls = 1/5(55) = 11.
Therefore, the number of yellow balls in the jar was 35 + 11 = 46.