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Question Workers in a coffee plantation take 18 days to pick coffee berries in 20% of the plantation. How many days will they take to complete the picking work for the entire plantation, assuming the rate of work stays the same? Why is this assumption necessary?
(20% work in 18 days) × 5 = 100% work in 90 days. The work will be completed in 90 days. Necessary Assumptions Weather conditions might change. Workers might get tired over time. This reduces their efficiency. Some workers might take leave or breaks.