Odpowiedź :
a) [12/48]*100%=[3/12]*100%=[3/12]*[100/1]%=[300/12]%=25%
b)[48/12]*100%=4*100%=400%
b)[48/12]*100%=4*100%=400%
a) 48- 100%
12- x%
x%= (12•100%) :48= 1200:48= 25%
b) 12-100%
48- x%
x%= (48•100%):12=4800:12=400%
12- x%
x%= (12•100%) :48= 1200:48= 25%
b) 12-100%
48- x%
x%= (48•100%):12=4800:12=400%