大师作文网GRE Section45-3 怎么算
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GRE Section45-3 怎么算
the daily rate for hotel that sleeps 4 people is 39dollars for one person and x dollars for each additional person.if 3 people take the room for one day and each pays 21dollars for the room what is the value fo
a)4 b)8 c)12 d)13 e)14
the daily rate for hotel that sleeps 4 people is 39dollars for one person and x dollars for each additional person.if 3 people take the room for one day and each pays 21dollars for the room what is the value fo
a)4 b)8 c)12 d)13 e)14
1个人39元
2个或以上39+nx
21X3=39+3X
63=39+3X
21=13+X
X=8
2个或以上39+nx
21X3=39+3X
63=39+3X
21=13+X
X=8