Neco Model Questions Vol1 2025 Mathematics Question 7
Practice objective / multiple choice question 7 from the 2025 Neco Model Questions Vol1 Mathematics examination.
The time \(T\) (in hours) required to complete a certain job varies directly as the number of workers \(W\) and inversely as the square of the speed \(S\) (in rpm) of a machine, i.e. \(T = k\,\frac{W}{S^{2}}\). When 5 workers operate the machine at 120 rpm, the job takes 8 hours. If the number of workers is increased to 8 and the job now takes 5 hours, what speed (in rpm) must the machine be set to?
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About This Question
This is Neco Model Questions Vol1 2025 Mathematics Question 7. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Medium .
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