Answer:
4; 12 (refer to explanation)
Explanation:
IF: 12 = total plants; 3 = amount of rows then,
12 ÷ 3 = 4
There are 4 plants per row.
IF: 12 = plants per row; 3 = amount of rows,
12 × 3 = 36 total plants; 12 plants in each row.
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