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Speed of Jane is 20 mph, with which he travels for ‘t’ hours. In order

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Manager
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G
Joined: 25 Dec 2018
Posts: 150
Location: India
Concentration: General Management, Finance
GMAT 1: 590 Q48 V23
GPA: 3.4
WE: Engineering (Consulting)
Speed of Jane is 20 mph, with which he travels for ‘t’ hours. In order  [#permalink]

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New post 05 Mar 2019, 07:13
1
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

70% (01:39) correct 30% (02:42) wrong based on 10 sessions

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Speed of Jane is 20 mph, with which he travels for ‘t’ hours. In order to keep the distance travelled same, by what percentage should the time ‘t’ be increased if the speed drops down by 20%?

A) 10%
B) 20%
C) 25%
D) 30%
E) 35%
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Joined: 18 Jul 2018
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Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
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Re: Speed of Jane is 20 mph, with which he travels for ‘t’ hours. In order  [#permalink]

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New post 05 Mar 2019, 10:02
Speed decrease by 20%, then time should be increased by \(\frac{20}{(100-20)}*100\) = 25%

C is the answer.
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Re: Speed of Jane is 20 mph, with which he travels for ‘t’ hours. In order   [#permalink] 05 Mar 2019, 10:02
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Speed of Jane is 20 mph, with which he travels for ‘t’ hours. In order

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