Question
Joseph has 2 containers. Container E and Container F are of different capacities. If Container E is filled by a tap at a rate of 4 litres per minute and Container F is filled by a tap at a rate of 7 litres per minute, when Container E is completely filled, 7 litres of water flowed out from Container F. If Container E is filled by a tap at a rate of 6 litres per minute and Container F is filled by a tap at a rate of 2 litres per minute, when Container E is completely filled, Container F is only one-quarter-filled. What is the capacity of Container F? Express your answer in litres.
3 m

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Joseph has 2 containers. Container E and Container F are of different capacities. If Container E is filled by a tap at a rate of 4 litres per minute and Container F is filled by a tap at a rate of 7 litres per minute, when Container E is completely filled, 7 litres of water flowed out from Container F. If Container E is filled by a tap at a rate of 6 litres per minute and Container F is filled by a tap at a rate of 2 litres per minute, when Container E is completely filled, Container F is only one-quarter-filled. What is the capacity of Container F? Express your answer in litres.