Final answer:
The factory will take 180 seconds to fill 1,800 cups of yogurt.
Step-by-step explanation:
To find the number of seconds it will take for the factory to fill 1,800 cups of yogurt, we need to divide 1,800 by the number of cups filled per second.
The factory fills 10 cups every second, so we divide 1,800 by 10. The calculation is 1,800 ÷ 10 = 180 seconds.