SOLUTION: A tank is 2 out of 3 full. After drawing off 120 liters. it's just 1 out of 4 full . what is the capacities of the tank.

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Question 1149693: A tank is 2 out of 3 full. After drawing off 120 liters. it's just 1 out of 4 full . what is the capacities of the tank.
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
A tank is 2 out of 3 full. After drawing off 120 liters. it's just 1 out of 4 full . what is the capacities of the tank.
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What is "2 out of 3?"
3 tanks? 2 of them full?
Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
.

Let me re-write your problem in proper English-Math language. 

    A tank is 2/3 full. After  draining  off 120 liters, it's just 1/4 full. 
    What is the  capacity of the tank.


SOLUTION 

Let x be the capacity of the tank, in liters.


Then from the condition of the problem


     - 120 = .


It is your basic equation.

To solve it, multiply both sides by 12. You will get


    8x - 120*12 = 3x

    8x - 3x     = 120*12

    5x          = 1440

     x          =  =  288.


ANSWER.  The capacity of the tank is 288 liters.

Solved.


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Notice how accurately I use English words, punctuation signs and capital letters, when I start new sentence (!)



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