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Two trains that are 480 km apart are heading towards each other at 80 km/h and 80 km/h. How many hours will it be before they meet?



Two trains that are 1620 km apart are heading towards each other at 80 km/h and 100 km/h. How many hours will it be before they meet?



Two trains that are 1190 km apart are heading towards each other at 90 km/h and 80 km/h. How many hours will it be before they meet?



Two trains that are 1260 km apart are heading towards each other at 60 km/h and 80 km/h. How many hours will it be before they meet?



Two trains that are 640 km apart are heading towards each other at 100 km/h and 60 km/h. How many hours will it be before they meet?



Two trains that are 330 km apart are heading towards each other at 50 km/h and 60 km/h. How many hours will it be before they meet?



Two trains that are 600 km apart are heading towards each other at 60 km/h and 90 km/h. How many hours will it be before they meet?



240 km ¶³¾îÁø ¾çÂÊ µÎ µµ½Ã¿¡¼­ °¢°¢ µÎ´ëÀÇ ±âÂ÷°¡ ¼­·Î¸¦ ÇâÇØ 70 km/h ¿Í 50 km/hÀÇ ¼Óµµ·Î ´Þ·Á ¿À°íÀÖ´Ù. µÎ´ëÀÇ ±âÂ÷°¡ ¼­·Î ¸¸³ª´Âµ¥ ¸î½Ã°£ÀÌ °É¸®´Â°¡?



Two trains that are 1260 km apart are heading towards each other at 90 km/h and 90 km/h. How many hours will it be before they meet?



Two trains that are 1600 km apart are heading towards each other at 100 km/h and 100 km/h. How many hours will it be before they meet?



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