Igcse Model Questions Vol1 2023 Mathematics Question 16
Practice objective / multiple choice question 16 from the 2023 Igcse Model Questions Vol1 Mathematics examination.
The time \(T\) (in minutes) required to fill a tank varies directly with the volume \(V\) (in litres) and inversely with the flow rate \(R\) (in litres per minute). However, if the flow rate exceeds \(20\) L/min, turbulence increases the effective filling time by \(10\%\). When \(V=300\) L and \(R=15\) L/min, the tank is filled in \(20\) min. What is the minimum flow rate (in L/min) that can be used to fill a \(450\) L tank in at most \(18\) min?
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About This Question
This is Igcse Model Questions Vol1 2023 Mathematics Question 16. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Mathematics examination.
Difficulty level: Medium .
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