Question
Ribbon P is thrice as long as Ribbon Q. Ribbon Q is 20 cm shorter than Ribbon R. Ribbon R is 62 cm shorter than Ribbon P. How long is Ribbon Q?
4 m

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Ribbon P is thrice as long as Ribbon Q. Ribbon Q is 20 cm shorter than Ribbon R. Ribbon R is 62 cm shorter than Ribbon P. How long is Ribbon Q?