Well.......using feet, we have
5 yards = 15 feet.....so the ratio is 10 / 15 = 2/3
Uisng yards....10 ft = 3 + 1/3 yards = 10/3 yards...so we have.........[10/3] / 5 = 10/3 * 1/5 = 2/3
However....note...the ratios will be the same.....no matter which we use....!!!!