Answer:
13/18
Step-by-step explanation:
Since Melissa ate 1/2 of her salad during lunch, 1/2 of her salad should be left.
If she ate 4/9 of that 1/2 left over from lunch for dinner, 1/2 × 4/9 = 4/18
So she ate 1/2 + 4/18 of her salad in total.
9/18 + 4/18=
13/18 of her salad
