英语翻译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 machined purchased by the fitness cente
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英语翻译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 machined purchased by the fitness cente
英语翻译
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 machined purchased by the fitness center was $1300,what is the greatest possible value of
这是08年1月的真题``答案是11.请帮我翻译题目,并写出如何解答的步骤.我知道这题应该不难``只是不知道哪里搞错就是得不出11这个答案.
我的答案也是16！但这是真题、应该不会有这种问题的```
英语翻译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 machined purchased by the fitness cente
my answer is 16 which is definitely not in accordance with condition"positive odd integer." hope someone else can work it out...
I get it.we misunderstood the meaning of median price ,it doesn't mean everage price.this particular question seems like Statistics question.
the answer:
possible A1:
1700 1700 1700 1700 1300 1300 (1300) 1300 1300 1300 1300 1300 1300 x=0 minimum
1700 1700 1700 1700 1300 1300 %1300% 1300 1300 1300 1300 1300 1200 x=1
.
1700 1700 1700 1700 1300 1300 1300 1300 1300 1300 1300 %1300% 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 up to x=11
It's not a simple algebra question but a easy Statistics question!
一共有12+x部机器，机器价格的中位数是1300，所以4<=x<=11,所以x最大值为11