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Question
a tank 40% is full of water ,if 9 liters water is removed the tank become 1/4 full what is the capacity of tank of watera/
20
30
40
60
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ANSWER : 4
Descrption
<p style="margin-left:0px;">Let's call the capacity of the tank "C" liters. Initially, the tank is 40% full of water, which means it contains 0.4C liters of water. When 9 liters of water are removed, it becomes 1/4 full, which means it contains (1/4)C liters of water.</p><p style="margin-left:0px;">We can set up an equation using this information:</p><p style="margin-left:0px;">0.4C - 9 = (1/4)C</p><p style="margin-left:0px;">Now, let's solve for C:</p><p style="margin-left:0px;">0.4C - 9 = (1/4)C</p><p style="margin-left:0px;">Multiply both sides of the equation by 4 to eliminate fractions:</p><p style="margin-left:0px;">1.6C - 36 = C</p><p style="margin-left:0px;">Subtract C from both sides:</p><p style="margin-left:0px;">0.6C - 36 = 0</p><p style="margin-left:0px;">Now, add 36 to both sides:</p><p style="margin-left:0px;">0.6C = 36</p><p style="margin-left:0px;">Finally, divide by 0.6 to find the capacity of the tank:</p><p style="margin-left:0px;">C = 36 / 0.6 = 60</p><p style="margin-left:0px;">So, the capacity of the tank is 60 liters.</p>
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