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Ezra pays $0.75 each time he takes a public transport to reach his sch

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Joined: 07 May 2015
Posts: 46
Location: India
Schools: Darden '21
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Ezra pays $0.75 each time he takes a public transport to reach his sch  [#permalink]

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New post Updated on: 03 Oct 2018, 23:14
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

44% (01:47) correct 56% (02:09) wrong based on 25 sessions

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Ezra pays $0.75 each time he takes a public transport to reach his school. Students who frequently use this service may instead purchase token each month for $13 and then pay $0.30 per each ride. If Ezra need to take the bus twice a day for K days next month and will not use the bus on any other day, what is the least possible value of K for which Ezra will save money by using the token?

A)10
B)12
C)15
D)18
E)28

Originally posted by reynaldreni on 03 Oct 2018, 21:59.
Last edited by chetan2u on 03 Oct 2018, 23:14, edited 1 time in total.
updated Topic name
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Re: Ezra pays $0.75 each time he takes a public transport to reach his sch  [#permalink]

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New post 04 Oct 2018, 02:09
Without token
0.75 *2(twice a day) *K( no of days) = 1.5K

With token
0.30*2*K =0.60K
13(price of token)

According to the question
For what value of K
1.5K < 13+0.60K
K =14.4 ~ 15

Alternative method :
Use the options to eliminate.

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Re: Ezra pays $0.75 each time he takes a public transport to reach his sch &nbs [#permalink] 04 Oct 2018, 02:09
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Ezra pays $0.75 each time he takes a public transport to reach his sch

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