Question
The total length of a thread, a ribbon and a streamer is 53.2 m. The streamer is 7 m longer than the thread. The ribbon is 4 times as long as the thread. Find the difference in length between the ribbon and the streamer.
4 m

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The total length of a thread, a ribbon and a streamer is 53.2 m. The streamer is 7 m longer than the thread. The ribbon is 4 times as long as the thread. Find the difference in length between the ribbon and the streamer.