Odpowiedź :
3.
a) 0,25x = 45 /*4
x= 180
b) 0.15x = 45 / :15, *100
x=300
c) 0,2x= 6.4 /*5
x=32
d) 1,5x = 75 /:3, *2
x= 50
4.
a) (60/300)*100%= 20%
b) (40/800)*100%= 5$
c) 75/50 *100% = 150%
d) 90/40 * 100% = 225
3.
a) 0,25x = 45 /*4
x= 180
b) 0.15x = 45 / :15, *100
x=300
c) 0,2x= 6.4 /*5
x=32
d) 1,5x = 75 /:3, *2
x= 50
4.
a) (60/300)*100%= 20%
b) (40/800)*100%= 5$
c) 75/50 *100% = 150%
d) 90/40 * 100% = 225