24题,,24题,,
24题,,依据题意有:Y甲=(x+2)*240/2=120(x+2)Y乙=(x+1)*240*60%=144(x+1)当两家旅行社收费相等时,即Y甲=Y乙;则:120(x+2)=144(x+1)解之得:x=4(人)