x/3=2/5x(220-x)
x/3+2x/5=2/5x220
11x/15=88
x=120 220-x=220-120=100
3/5x(x+12)=3x/4
3x/4-3x/5=3/5x12
3x/20=36/5
x=48 x+12=48+12=60
x/3=2/5x(220-x)
x/3+2x/5=2/5x220
11x/15=88
x=120 220-x=220-120=100
3/5x(x+12)=3x/4
3x/4-3x/5=3/5x12
3x/20=36/5
x=48 x+12=48+12=60