 
 <translate> Heath planted 400 rows x 300 plants = 120,000 carrot plants. He planted 120,000 plants in 20 hours, or 120,000 / 20 = 6,000 plants per hour.
The final answer: 6000. <hau> Heath ya shuka layuka 400 x tsire-tsire 300 = tsire-tsire 120,000. Ya shuka shuka 120,000 a cikin sa'o'i 20, ko kuma 120,000 / 20 = shuka 6,000 a kowace awa. Amsar ƙarshe: 6000. 