40% because... 100%/x%=960/384 <span>(100/x)*x=(960/384)*x - </span>we multiply both sides of the equation by x <span>100=2.5*x - </span>we divide both sides of the equation by (2.5) to get x <span>100/2.5=x </span> <span>40=x </span> <span>x=40</span>