Neco Model Questions Vol1 2021 Mathematics Question 7
Practice objective / multiple choice question 7 from the 2021 Neco Model Questions Vol1 Mathematics examination.
The time \(t\) (in hours) required to finish a job varies directly as the number of workers \(w\) and inversely as the efficiency \(e\) of the machine (expressed as a decimal). When 8 workers operate a machine of efficiency \(0.5\) the job takes 12 hours. How many workers are needed if the efficiency is increased to \(0.75\) and the job must be completed in 8 hours?
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About This Question
This is Neco Model Questions Vol1 2021 Mathematics Question 7. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Medium .
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