Question
The total length of a string, a thread and a ribbon is 51.1 m. The ribbon is 14 m longer than the string. The thread is 5 times as long as the string. Find the difference in length between the thread and the ribbon.
4 m

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The total length of a string, a thread and a ribbon is 51.1 m. The ribbon is 14 m longer than the string. The thread is 5 times as long as the string. Find the difference in length between the thread and the ribbon.