Question
The length of copper pipe U is 45 of the length of copper pipe X and the length of copper pipe X is 15 of the length of copper pipe V and 12 of the length of copper pipe W. What fraction of the total length of the 4 copper pipes is copper pipe W?
3 m

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The length of copper pipe U is 45 of the length of copper pipe X and the length of copper pipe X is 15 of the length of copper pipe V and 12 of the length of copper pipe W. What fraction of the total length of the 4 copper pipes is copper pipe W?