53. 100% - 47 % = 57% bleven thuis
12 500 / 100 x 57% = 7 125
54. 100% - 25% = 75%
349,50 / 100 x 75%= 262,125 = 262,13
of
349,50/100 x 25% = 87.375 = 87,375
349,50 - 87,375 = 262,125 = 262,13
55. 100% - 40% = 60%
45/100 x 60% = 27
of
45/100 x 40= 18
45 - 18 = 27