关于SAT数学的一个问题,求牛人拯救A fitness center purchased a number of exercise machines :4 costing $1700 each,8 costing $1300 each,and x costing $1200 each,where x is a positive odd integer.if the median price for all the exercise mach
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![关于SAT数学的一个问题,求牛人拯救A fitness center purchased a number of exercise machines :4 costing $1700 each,8 costing $1300 each,and x costing $1200 each,where x is a positive odd integer.if the median price for all the exercise mach](/uploads/image/z/2683145-65-5.jpg?t=%E5%85%B3%E4%BA%8ESAT%E6%95%B0%E5%AD%A6%E7%9A%84%E4%B8%80%E4%B8%AA%E9%97%AE%E9%A2%98%2C%E6%B1%82%E7%89%9B%E4%BA%BA%E6%8B%AF%E6%95%91A+fitness+center+purchased+a+number+of+exercise+machines+%3A4+costing+%241700+each%2C8+costing+%241300+each%2Cand+x+costing+%241200+each%2Cwhere+x+is+a+positive+odd+integer.if+the+median+price+for+all+the+exercise+mach)
关于SAT数学的一个问题,求牛人拯救A fitness center purchased a number of exercise machines :4 costing $1700 each,8 costing $1300 each,and x costing $1200 each,where x is a positive odd integer.if the median price for all the exercise mach
关于SAT数学的一个问题,求牛人拯救
A fitness center purchased a number of exercise machines :4 costing $1700 each,8 costing $1300 each,and x costing $1200 each,where x is a positive odd integer.if the median price for all the exercise machines purchased by the fitness center was $1300,what is the greatest possible value of x
关于SAT数学的一个问题,求牛人拯救A fitness center purchased a number of exercise machines :4 costing $1700 each,8 costing $1300 each,and x costing $1200 each,where x is a positive odd integer.if the median price for all the exercise mach
4+8>11
这道题的关键在median,也就是说中间的那个数.因为x是一个奇数,并且最中间的这个数字必须出现在1300里,所以最大的x是11.
如果是十一的话,总数为23,中间的第十一个数出现在1300 each里面,满足条件.
如果是十三的话,总数为25,中间的第十三个数出现在1200 each里面,不满足条件.
不知道你理解了么.