Question
The length of stainless steel pipe A is 23 of the length of stainless steel pipe D and the length of stainless steel pipe D is 12 of the length of stainless steel pipe B and 19 of the length of stainless steel pipe C. What fraction of the total length of the 4 stainless steel pipes is stainless steel pipe B?
3 m

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The length of stainless steel pipe A is 23 of the length of stainless steel pipe D and the length of stainless steel pipe D is 12 of the length of stainless steel pipe B and 19 of the length of stainless steel pipe C. What fraction of the total length of the 4 stainless steel pipes is stainless steel pipe B?