求教ＳＡＴ数学题．谢谢大家！

wwttaiUID: 2212074

ＳＡＴ数学题，请求各位朋友帮助解答


１．There  are  12  men  on  a  basketball  team  ,and  in  a  game  5   of   them  
# R1 O% w7 Y4 F$ A0 w1 U! q" T6 M" P9 R       play  at   any  one  time   .If   the    game   is   1  hour   long  ,and   if  each
       man   plays   exactly   the    same   amount   of   time   ,how   many minutes
      does   each   man  play?
KEY[25分钟］
! u( c( v1 k4 L: @. |$ ~) T
2.The   volume   of  pitcher   1  is  A  ounces  ,and  the   volume   of   pitcher  2  
   is     B   ounces   ,with  B>A.  If    pitcher TJ   is   full   of   water  and  pitcher
   1    is   empty   ,and    if     just   enough   water   is   poured    from  pitcherTJ
   to   fill    pitcher    1,  what   fraction   of   pitcher 2  is    now   full?
KEY[  B-A/B ]

toostrongUID: 2184676

:lolThe 1st question
only 5 out of 12 players can be on court at one time.
that means each player plays 5/12 of the total time (1 hour)
which equals to 60min*5/12=25min

toostrongUID: 2184676

:)the 2nd question
& j" R$ ~; u- H6 L2 t, Zfirst, i'd say you've typed the question wrong OR it was printed wrong
where does pither TJ come from?
so the CORRECT version  should be like this:
The   volume   of  pitcher   1  is  A  ounces  ,and  the   volume   of   pitcher  2  
- |7 {# }, h# Y* e   is     B   ounces   ,with  B>A.  If    pitcher 2   is   full   of   water  and  pitcher
/ ]" I3 @- `# p% d; v- s% H       is   empty   ,and    if  just enough   water is  poured    from  pitcher 2
   to   fill    pitcher    1,  what   fraction   of   pitcher 2  is    now   full?
" q5 f5 G: e" p0 lthen the answer is clear--A ounces of water is poured from 2(B ounces) to 1,
/ m9 k: c% E7 tbut 2 is larger than 1. therefore B-A of water remains in pitcher 2,
so the fraction would be (B-A)/B
:victory:

7 o! N4 q4 A4 U* b5 @[ 本帖最后由 toostrong 于 2006-8-26 21:51 编辑 ]

wwttaiUID: 2212074

第2题没有打错，应该印错了．书上就写的ＴＪ．
( V& m) X) a7 }/ }! K0 s4 D我懂了，谢谢指教！