Odpowiedź:
a) 128 - 40%
x. - 100%
x = 100*128:40= 320
b) 33 - 30%
x. - 100%
x = 33*100:30=110
c) 90 - 75%
x. - 100%
x = 90*100:75=120
d) 12 - 15%
x. - 100%
x = 12*100:15=80
e) 54 - 270%
x. - 100%
x = 100*54:270=20
f) 462 - 220%
x. - 100%
x = 462*100:220=210
g) 16 - 0,2%
x. - 100%
x = 16*100:0,2=8000
h) 8 - 1,6%
x - 100%
x = 8*100:1,6=500