Răspuns :
a) p% din 400=320
p/100 * 400=320
p/100= 320/400
p/100= 8/10
p=100*8/10
p=80%
b)p% din 20= 300
p/100 * 20=300
p/100= 300/20
p/100= 15
p=1500%
p/100 * 400=320
p/100= 320/400
p/100= 8/10
p=100*8/10
p=80%
b)p% din 20= 300
p/100 * 20=300
p/100= 300/20
p/100= 15
p=1500%
400..................100%
320................... x %
____________________
x=320x100/400
x=80 %
20.......................100%
300.................... x %
_______________________
x=300x100/20
x=1500%
320................... x %
____________________
x=320x100/400
x=80 %
20.......................100%
300.................... x %
_______________________
x=300x100/20
x=1500%