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alexdok [17]
2 years ago
10

How many gallons of pure water should be evaporated from 160 gallons of a solution containing 12% salt

Mathematics
2 answers:
AfilCa [17]2 years ago
6 0

Answer:

66 gallons

Step-by-step explanation:

Given that initially 160 gallons of a solution containing 12% salt.

So, the initial amount of salt = 12% of 160 = 12/100 x 160 = 19.2 gallons.

Let x gallons of water get evaporated so that the remaining solution contains 20% salt.

The remaining amount of solution = 160-x gallons.

As the initial amount of salt is still in the solution which is equal to 20% of the remaining solution, so

19.2 = 20% of (160-x)

\Rightarrow 19.2 = \frac {20}{100}\times (160-x) \\\\\Rightarrow 19.2 = \frac {1}{5}\times (160-x) \\\\\Rightarrow 19.2 \times 5= 160-x \\\\\Rightarrow 96= 160-x \\\\\Rightarrow x= 160-96 \\\\

\Rightarrow x= 66 gallons

Hence, 66 gallons of water must be evaporated to get a 20% salt solution.

Igoryamba2 years ago
6 0

Answer:

its A, "gallons of pure water"

Step-by-step explanation: just did it on edg and got it right

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Answer:

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Step-by-step explanation:

Although the question is somewhat incomplete, I have tried to reconstruct the question as much as possible to aid understanding (attached is the pictorial representation of the rhombus).

Firstly, it is important to note that rhombuses are parallelograms which have all sides equal and whose diagonals are perpendicular to each other. In addition to this, their diagonals bisect one other.

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