what quantity of water should be added to reduce 20 liters of 80 % acidic liquid to 20 % acidic liquid? Select: A) 30 liters B) 50 liters C) 60 liters D) 70 liters E) 80 liters
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">20 * (4/5)</gadget>
<output>16</output>

<gadget id="calculator">16 * 100</gadget>
<output>1_600</output>

<gadget id="calculator">1_600 / 20</gadget>
<output>80</output>

<gadget id="calculator">80 - 20</gadget>
<output>60</output>

<result>C</result>
what quantity of water should be added to reduce 20 liters of 80 % acidic liquid to 20 % acidic liquid?
subtract(divide(multiply(multiply(20, divide(80, const_100)), const_100), 20), 20)
"acid in 20 liters = 80 % of 20 = 16 liters suppose x liters of water be added . then 16 liters of acid in 20 + x liters of diluted solution 20 % of 20 + x = 16 20 + x = 80 x = 60 liters answer is c"