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
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Solution:
ReplyDeleteHamburger (H), coleslaw(C) and french fries (F)
Then
H + C = 3.59 … (i)
H + F = 4.40 … (ii)
And F = 2C
Putting this in (ii)
We get H + 2C = 4.40 … (iii)
Subtract (i) from (iii)
We get C = 0.81
Hence cost of a French fries is = 2C = $1.62
This answer does not match with any of the option. Please correct me if I am wrong. Put your views in comments.
ff=1.62
ReplyDeleteThere is no right option to choose!
Yupp.. thanks for confirmation.
ReplyDelete