求解一道数学题，有没有什么更快更好的办法得到这题的答案呢

二丫zheng

The table above shows the amount of waste material, in tons, recycled by each of five counties in a single year and the amount of waste material, also in tons, that was disposed of in landfills by the five counties in that year. Which county had the lowest ratio of waste material disposed of to waste material recycled in the year reported in the table?

a) A
b) B
c) C
d) D
e) E

小唯唯

恩？这个除一下不是很简单么？把零都消了，然后很简单能排除3个吧……（我记得），后两个就算呗~

小唯唯

估计吧，看上去都是5倍左右的样子，就先用5试试，结果C明显小于5倍，其他都比较接近5倍，就选C了。不知道算“更快更好”的方法么。

-- by 会员 51xt (2011/5/1 0:12:53)

恩恩~~对对~~

charles1987

小唯唯，有些东西概算还得算啊。。。

小唯唯

小唯唯，有些东西概算还得算啊。。。

-- by 会员 charles1987 (2011/5/1 0:42:12)

这是问句？还是对我语重心长的提醒？

charles1987

小唯唯，有些东西概算还得算啊。。。

-- by 会员 charles1987 (2011/5/1 0:42:12)

这是问句？还是对我语重心长的提醒？

-- by 会员 小唯唯 (2011/5/1 7:35:34)

it's up to u. take whatever to u is helpful.