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小 發表於 2012-5-18 09:34 PM (第 4362 天)
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5** Maths Question of the Day 1.4 (DSE數學奪5**必做題型!!!) [已附答案]
Balotelli is now playing fireworks with k friends and they can ignite u fireworks in h hours. Suppose that v friends of Balotelli is hurt by the fireworks and have to go to the hospital. How many hours do the remaining people have to play such that same amount of fireworks are ignited as before?
巴神正在與k個朋友玩煙花,且他們可於h小時內燃點u個煙花。巴神的其中v個朋友被煙火灸傷而需到醫院去。請問餘下的人需繼續燃點煙花多久才能燃點與之前一樣數量之煙花?
答案在下方,未做別偷看!
(hk+h)/(k-v+1)
[ 本帖最後由 MrDon 於 2013-6-18 08:40 AM 編輯 ]