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There is enough water on a lifeboat to feed 12 occupants for 16 days.

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There is enough water on a lifeboat to feed 12 occupants for 16 days.  [#permalink]

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New post 10 Mar 2017, 22:36
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Difficulty:

  55% (hard)

Question Stats:

63% (01:32) correct 38% (00:38) wrong based on 8 sessions

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There is enough water on a lifeboat to feed 12 occupants for 16 days. Four days into the voyage there is an argument and two of the occupants are thrown overboard. How many extra days worth of water do the remaining occupants gain ?

A 2.4
B 1.2
C 2.0
D 1.75
E 4.0

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There is enough water on a lifeboat to feed 12 occupants for 16 days.  [#permalink]

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New post 10 Mar 2017, 23:37
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0akshay0 wrote:
There is enough water on a lifeboat to feed 12 occupants for 16 days. Four days into the voyage there is an argument and two of the occupants are thrown overboard. How many extra days worth of water do the remaining occupants gain ?

A 2.4
B 1.2
C 2.0
D 1.75
E 4.0


Lets assume each person need 1 liter water, so for 12 people water needed is 12 liters per day.
There is 16d days water so total water available is 12*16
After 4 days remaining water is 12*12
Now 2 people are gone, so remaining 10 people have 144 liters of water, which will last for 144/10= 14.4 days, additional days people gain is 14.4-12= 2.4

Kudos if you like :)
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Re: There is enough water on a lifeboat to feed 12 occupants for 16 days.  [#permalink]

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New post 11 Mar 2017, 03:59
0akshay0 wrote:
There is enough water on a lifeboat to feed 12 occupants for 16 days. Four days into the voyage there is an argument and two of the occupants are thrown overboard. How many extra days worth of water do the remaining occupants gain ?

A 2.4
B 1.2
C 2.0
D 1.75
E 4.0


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Re: There is enough water on a lifeboat to feed 12 occupants for 16 days. &nbs [#permalink] 11 Mar 2017, 03:59
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