I) To determine the number of days it takes to complete half of the production, we can use the concept of proportions.
If 1 production is completed in 12 days, then 1/2 of the production would be completed in half the time.
So, (1/2) production would be completed in (1/2) * 12 = 6 days.
Therefore, it would take 6 days to complete half of the production.
ii) To calculate the amount of work completed in 9 days, we can set up a proportion using the ratio of time to production.
If 1 production is completed in 12 days, then the amount of work completed in 9 days can be calculated as:
(9 days) / (12 days) = (x work) / (1 production)
Cross-multiplying, we get:
9 * 1 = 12 * x
9 = 12x
Dividing both sides by 12:
x = 9/12
Simplifying the fraction, we get:
x = 3/4
Therefore, in 9 days, 3/4 (or 75%) of the work would be completed.
To summarize:
i) It would take 6 days to complete half of the production.
ii) In 9 days, 3/4 (or 75%) of the work would be completed.