Odpowiedź:
a) 7165·1,5=10747,5 zł
b) 4132·1,8=7437,6 zł
c) 1231·0,25=307,75 zł
d) 17865·0,6=10719zł
a) 7165 + 0.5 × 7165 = 7165 + 3582.5 = 10747.5
b) 4132 + 0.8 × 4132 = 4132 + 3305.6 = 7437.6
c) 1231 - 0.75 × 1231 = 1231 - 923.25 = 307.76
d) 17865 - 0.4 × 17865 = 17865 - 7146 = 10719
