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MGSM / Autrefois, Lee courait le 400 mètres haies deux secondes plus vite que Gérald.…

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Autrefois, Lee courait le 400 mètres haies deux secondes plus vite que Gérald. Mais après un changement de régime alimentaire, Gérald a amélioré sa vitesse de 10 %. Si Lee court le 400 mètres haies en 38 secondes, quelle est, en secondes, le temps de course de Gérald après son nouveau régime ?

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