Question
Ribbon X is 139 m long. Ribbon Y is 130 m longer than Ribbon X. Ribbon Z is 71 m shorter than Ribbon Y. What is the length of Ribbon Z?
4 m

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Ribbon X is 139 m long. Ribbon Y is 130 m longer than Ribbon X. Ribbon Z is 71 m shorter than Ribbon Y. What is the length of Ribbon Z?