This problem is saying that Donna planted corn in 2/5 of her total of 6/7 acres of land. 2/5 = 4/10 = 0.4 = 40% 40% of 6/7 = 0.342857143 To find this in fraction form, just multiply the fractions. 2/5 • 6/7 = 12/35 12/35 is in simplest form, so it is the answer.