肯定有什么地方想错了, 请教各位!

tqbiao

新东方上的题,抓狂中!

5. At a certain diner, a hamburger and coleslaw cost $3.59, and a hamburger and french fries cost $4.40. If french fries cost twice as much as coleslaw, how much do french fries cost?

(A) $0.30

(B) $0.45

(C) $0.60

(D) $0.75

(E) $0.90

做不出答案 郁闷中!

我的做法

h + c = 3.59

h + f = 4.40

f = 2c

c=0.81

f = 1.62

肯定有什么地方想错了, 请教各位!

dennis19790924

题目错了