1/2 of a 3-ounce of meatloaf = (1/2) x 3 = 3/2 ounce
3/4 of 3-ounce of mashed potatoes = (3/4) x 3 = 9/4 ounce
1/3 of a 2-ounce of green beans = (1/3) x 2 = 2/3 ounce
The total solid food stacie consumed = (3/2) + (9/4) + (2/3)
= 1.5 + 2.25 + 0.666
= 4.416 ounces