Question
The length of stainless steel pipe B is 45 of the length of stainless steel pipe E and the length of stainless steel pipe E is 13 of the length of stainless steel pipe C and 13 of the length of stainless steel pipe D. What fraction of the total length of the 4 stainless steel pipes is stainless steel pipe D?
3 m

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The length of stainless steel pipe B is 45 of the length of stainless steel pipe E and the length of stainless steel pipe E is 13 of the length of stainless steel pipe C and 13 of the length of stainless steel pipe D. What fraction of the total length of the 4 stainless steel pipes is stainless steel pipe D?