July 2022 1 264 Report
Bonjour,
En ces temps de disette de problèmes,
aidez-moi à rédiger en Anglais la résolution de ce casse-tête:
"The current in a stream moves at a rate of 7 mph. If a boat travels 98 miles downstream in the same time that it takes to travel 49 miles upstream, what is the speed of the boat in still water?​"
Merci pour vos cogitations .
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