Answer :
200/x=100/70
(200/x)*x=(100/70)*x multiply both sides of the equation by x
200=1.42857142857*x divide both sides of the equation by (1.42857142857) to get x
200/1.42857142857=x
140=x
x=140
(200/x)*x=(100/70)*x multiply both sides of the equation by x
200=1.42857142857*x divide both sides of the equation by (1.42857142857) to get x
200/1.42857142857=x
140=x
x=140