Answer:
He planted 60 tomato plants, or 5 dozen tomato plants.
Step-by-step explanation:
6 dozen = 6 × 12 = 72
He planted 72 plants and harvested 104 tomatoes per plant.
The next year he had a crop of 6,240 tomatoes, and also got 104 tomatoes per plant.
6,240/104 = 60
He planted 60 tomato plants, or 5 dozen tomato plants.
