ÁöÇý Ű¿ì´Â ¿µ¾î(Á¦ 61 ȸ) : Æò±Õ¼Óµµ(2)
2026-05-09 ¿ÀÈÄ 11:47:21 | Á¶È¸ : 224
ÁöÇý Ű¿ì´Â ¿µ¾î(Á¦ 61 ȸ) : Æò±Õ¼Óµµ(2)
english that cultivates wisdom !
[¹®] :
two youngsters were running as hard as they could.
µÎ ÀþÀºÀ̰¡ ±×µéÀÌ ÇÒ ¼ö ÀÖ´Â ÇÑ Èû²¯ ´Þ¸®°í ÀÖ¾ú´Ù.
they averaged 6 miles per hour, and then had to rest.
±×µéÀº Æò±Õ ½Ã°£´ç 6¸¶ÀÏÀ̾ú´Ù. ±×¸®°ï ½¬¾î¾ß Çß´Ù.
on the way back,
they averaged only 4 miles per hour for the same distance.
¿À´Â ±æ¿£,
°°Àº °Å¸®¸¦ ½Ã°£´ç ´ÜÁö Æò±Õ 4¸¶ÀÏÀÌ °É·È´Ù.
not counting resting time,
what was their average speed?
È޽Ľð£Àº °è»ê ÇÏÁö ¾Ê°í,
±×µéÀÇ Æò±Õ ¼Óµµ´Â ¾ó¸¶¿´´Â°¡?
º¸±â : °¡) 4.6 / mph ³ª) 4.8 " ´Ù) 5.0 " ¶ó) 5.5 "
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[´ä] ( )
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<¿À´ÃÀÇ ¸í¾ð>
little drops of water make the mighty ocean.
/ ÀÛÀº ¹°¹æ¿ïÀÌ Èû ¼¾ ´ë¾çÀÌ µÈ´Ù. --> ³«¼ö(Ñæâ©)°¡ ¹ÙÀ§¸¦ ¶Õ´Â´Ù.
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[Á¤´ä ¹× ÇØ¼³]
Á¤´ä : ³ª) 4.8 /mph
ÇØ¼³ :
°Å¸®¸¦ ¼Ò¿ä½Ã°£À¸·Î ³ª´©¸é µÈ´Ù.
you just need to divide the distance by the time taken.
¿¹¸¦ µé¾î 12¸¶ÀÏÀ» ´Þ¸°´Ù Ä¡ÀÚ,
for example, lets say you run 12 miles.
±×·¯¸é °¡´Â µ§ 2 ½Ã°£, ¿À´Â µ§ 3½Ã°£ÀÌ °É¸°´Ù.
then it takes 2 hours to get there and 3 hours to come back.
±×·¯¹Ç·Î ¿Õº¹ 24¸¶ÀÏ¿¡ 5½Ã°£ÀÌ ¼Ò¿ä µÇ¾úÀ¸´Ï --
therefore, since it took 5 hours for a round trip of 24 miles --
¡Å 24 ¡À 5 = 4.8
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