Question
Packet X is half as heavy as Packet Y. Packet Z is 5 times as heavy as Packets X and Y together. What is the mass of Packet Z if Packet Y is r kg?
2 m

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Packet X is half as heavy as Packet Y. Packet Z is 5 times as heavy as Packets X and Y together. What is the mass of Packet Z if Packet Y is r kg?