A: 4.00 25% Save
B: 4.60 22% Save
C: 5.00 20% Plunge
D: 6.50 15% Plunge

Outlays on Savers:

A: 12.50 = 50 * 25%
B: 11.00 = 50 * 22%

leaving 26.50 to be outlaid on plungers.

C: 15.1 = 26.50*20/(20+15)
D: 11.4 = 26.50*15/(20+15)

So win 25.30 on Plungers