Odpowiedź :
a) 50% • x = 12 | : 50%
x = 24
b) 25% • x = 7 |: 25%
x = 28
c) 10% • x = 2 |: 10%
x = 20
d) 20% • x = 10 |: 20%
x= 50
e) 1% • x = 3 |: 1%
x = 300
f) 200% • x = 16 |:200%
x = 8
a) 50% • x = 12 | : 50%
x = 24
b) 25% • x = 7 |: 25%
x = 28
c) 10% • x = 2 |: 10%
x = 20
d) 20% • x = 10 |: 20%
x= 50
e) 1% • x = 3 |: 1%
x = 300
f) 200% • x = 16 |:200%
x = 8