gmat数学疑问
1、incityxlastApril,wastheaverage(arithmeticmean)dailyhightemperaturegreaterthanthemediandailyhightemperature?
(1)incityxlastApril,thesumofthe30dailyhightemperaturewas2,160°
(2)incityxlastApril,60%ofthedailyhightemperaturewerelessthantheaveragedailyhightemperature.
题目中的60%没有说是最前面那几天啊?有可能是前九天和九天,那怎么可以估计到中位数呢?