60%X+25=40
60%X=40-25
X=15÷60%
X=25
x-10%X=18
(1-10%)X=18
0.9X=18
X=18÷0.9
X=20
75%x+5%X=17.6
(75%+5%)X=17.6
80%X=17.6
X=17.6÷0.8
X=22
60%X+25=40
60%X=40-25
X=15÷60%
X=25
x-10%X=18
(1-10%)X=18
0.9X=18
X=18÷0.9
X=20
75%x+5%X=17.6
(75%+5%)X=17.6
80%X=17.6
X=17.6÷0.8
X=22