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Un article trouvé pour ce sujet.
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12 men can complete a work in 8 days |
2007-09-23 |
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farah pose la question :
12 men can complete a work in 8 days. 3 days after they started working, 3 more men joined. In how many days will all of them together complete the remaining work.
Stephen La Rocque lui répond. |
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