Which of the following situations results in a sum of 1 1/2 ? select all that apply

a) i cut 3 1/3 inches from my grave. the grass grew 1 5/6 inches over the next week.
b) i used up 1/4 of a pound of coffee and bought 1 1/4 of a pound of coffee from the store
c) i gained 6 1/2 pounds and my wife lost 8 pounds
d) i had 4 1/4 bottles of juice and drank 1 3/4 of them
e) i painted 5/8 of one room and 7/8 of a another
f) i used 3/4 of a pound of ground beef to make burgers and purchased 2 1/4 of a pound of ground beef