The lenth of the rod is 21/5 m 5/13 part of this rod is painted red 7/13 part is painted black and rest of the part painted green find the length of each part
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5/13*21/5=21/13m red part
7/13*21/5=147/65m black part
21/5-21/13-147/65=273/65-105/65-147/65
273-105-147/65
21/65m part is green
7/13*21/5=147/65m black part
21/5-21/13-147/65=273/65-105/65-147/65
273-105-147/65
21/65m part is green
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