Question
The total length of a rope, a thread and a streamer is 55.2 m. The streamer is 15 m longer than the rope. The thread is 4 times as long as the rope. Find the difference in length between the thread and the streamer.
4 m

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The total length of a rope, a thread and a streamer is 55.2 m. The streamer is 15 m longer than the rope. The thread is 4 times as long as the rope. Find the difference in length between the thread and the streamer.