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At a certain industrial manufacturer, an open tank contains 6% fluorin

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Joined: 18 Jul 2017
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At a certain industrial manufacturer, an open tank contains 6% fluorin  [#permalink]

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New post 30 Jun 2018, 06:50
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At a certain industrial manufacturer, an open tank contains 6% fluorine dissolved in water. If the tank holds 1000 gallons, and 10 gallons of the total volume evaporate as water each day, what is the concentration of fluorine after 25 days

A. 4%
B. 6%
C. 8%
D. 10%
E. 15%
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Joined: 07 Jun 2018
Posts: 60
Location: India
Concentration: Finance, Marketing
GPA: 4
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Re: At a certain industrial manufacturer, an open tank contains 6% fluorin  [#permalink]

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New post 30 Jun 2018, 09:15
Quantity of fluorine - 6% of 1000= 60 gallons

10 gallons of water evaporate everyday
So in 25 days - 250 gallons of water evaporates
remaining quantity -1000-250=750
concentration of fluorine after 25 days - (60/750 )*100=8% Ans C

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Re: At a certain industrial manufacturer, an open tank contains 6% fluorin  [#permalink]

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New post 30 Jun 2018, 23:46
Given 1000 gallons of sol.
6% flourine = 60
Rest water = 940
Now 10 gallons per day of total sol evaporates as water tricky
10 gallons per day so in 25 days 25x10 =250 gallons evaporated
Solution left 1000-250=750
So flourine concern = 60/750 = 0.08 =8%
Re: At a certain industrial manufacturer, an open tank contains 6% fluorin &nbs [#permalink] 30 Jun 2018, 23:46
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At a certain industrial manufacturer, an open tank contains 6% fluorin

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