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200zł - 100%
80zł - x%
x = 100*80 / 200
x = 8000 / 200
x = 40%
Słodycze:
200zł - 100%
x zł - 28%
x = 200*28 / 100
x = 5600/100
x = 56zł
Oszczędności:
200zł - (80zł + 56zł) = 200zł - 136zł = 64zł
100% - (40%+28%) = 100% - 68% = 32%