(100-X)/100=25% X1-00.1x=0.25x0.01x+0.25x=10.26x=1x=50/13
(100-X)/100=25% 100-x=25x=100-25x=75
(100-X)/100=25%1-0.01X=0.250.01X=1-0.250.01X=0.75X=0.75÷0.01X=75
75