Waec Model Questions Vol1 2023 Agricultural Science Question 15
Practice objective / multiple choice question 15 from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
A batch of 500 kg of maize kernels has an initial moisture content of 22% (wet basis). The target moisture for safe storage is 13% (wet basis). Two drying methods are available: sun drying, which reduces moisture at 0.5% per hour but cannot lower moisture below 15%; and a mechanical dryer, which reduces moisture at 1.2% per hour with no lower limit. The farmer may first use sun drying for any integer number of hours and then finish with the mechanical dryer. What is the minimum total drying time (in whole hours) required to reach the target moisture?
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About This Question
This is Waec Model Questions Vol1 2023 Agricultural Science Question 15. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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