大家看看这题

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

大家看看这题