Waec Model Questions Vol1 2021 Agricultural Science Question 24
Practice objective / multiple choice question 24 from the 2021 Waec Model Questions Vol1 Agricultural Science examination.
In a herd of 120 cattle, 2 animals were already infected with a disease at the start of week 1. New cases recorded were: week 1 - 5 cases, week 2 - 8 cases, week 3 - 4 cases, week 4 - 5 cases. The vaccine was introduced at the beginning of week 3 and is expected to reduce the weekly incidence by 40 % compared with the pre‑vaccine average. Calculate the percentage reduction in incidence actually achieved during weeks 3 and 4.
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About This Question
This is Waec Model Questions Vol1 2021 Agricultural Science Question 24. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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