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Someone passed a certain bridge, which needs fee. There are 2 ways fo
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18 Nov 2022, 08:35
18 Nov 2022, 08:35
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Question Stats:
60% (01:40) correct
40% (02:07) wrong based on 10 sessions
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Someone passed a certain bridge, which needs fee. There are 2 ways for him to choice. A : $13/month+$0.2/time , B: $0.75/time . He passes the bridge twice a day. How many days at least he passes the bridge in a month, it is economic by A way?
A) 11
B) 12
C) 13
D) 14
E) 15
A) 11
B) 12
C) 13
D) 14
E) 15
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Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
Re: Someone passed a certain bridge, which needs fee. There are 2 ways fo
[#permalink]
18 Nov 2022, 16:56
18 Nov 2022, 16:56
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A economic way:
13 + (2*0.2)x <= (2*0.75)x
which x=number of days
13 + 0.4x <= 1.5x
13<= 1.1x
11.81<=x
x should be at least 12 (B)
13 + (2*0.2)x <= (2*0.75)x
which x=number of days
13 + 0.4x <= 1.5x
13<= 1.1x
11.81<=x
x should be at least 12 (B)
gmatclubot
Re: Someone passed a certain bridge, which needs fee. There are 2 ways fo [#permalink]
18 Nov 2022, 16:56
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