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

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