Question

解方程25%x+40%x=5.2 （1-75%）x=36 120-25%x=100 x/(1-24%)=1.14

Answer 1

25%x+40%x=5.2 0.65x=5.2x=8（1-75%）x=36 0.25x=36x=144120-25%x=100 0.25x=120-1000.25x=20x=80x/(1-24%)=1.14x=1.14x0.76x=0.8664