2. The cost of registrantion for a conference is $150 per person. The lunch is available to registrants for an additional $30. If the number of registrants who pay the lunch is 60 more than the number of registrants who do not. What's the number of registrants?
我补充一下第104题,我考得时候碰到的和这题有点区别。油箱有10.5gallon,要开500miles,油耗好象是34miles/gallon(应该是这个数,或者是32),开到油箱剩less than half gallon的时候加满,问最后剩多少油。这个我确定是half后面有gallon,因为我开始没看清楚,按剩半箱油算算出来选项里没有,后来仔细看题才发现half后是gallon,大家考试碰到的时候小心一点就行,看清楚到底剩半箱还是半gallon
2. The cost of registrantion for a conference is $150 per person. The lunch is available to registrants for an additional $30. If the number of registrants who pay the lunch is 60 more than the number of registrants who do not. What's the number of registrants?