Answer:
2.6 tuna
Explanation:
Amount of tuna salad rob has = 7.8ounces
Amount of sanndwiches made = 3sandwiches
If she had equal amount of tuna on each sandwiches
Amount of tuna in each = Total amount of tuna/Amount of sandwiches
Amount of tuna in each = 7.8/3
Amount of tuna in each = 2.6 tuna
Hence she put 2.6 tuna in each sandwiches