a pump can fill a tank with water in 3 hours. because of a leak, it took 3 1 / 3 hours to fill the tank. the leak can drain all the water of the tank in? Choices: A) 17 hr B) 19 hr C) 30 hr D) 14 hr E) 16 hr
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<gadget id="calculator">10 / 3</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">1 / (10/3)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/3) - (3/10)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / (1/30)</gadget>
<output>30</output>

<result>C</result>
a pump can fill a tank with water in 3 hours. because of a leak, it took 3 1 / 3 hours to fill the tank. the leak can drain all the water of the tank in?
inverse(subtract(divide(1, 3), inverse(divide(add(multiply(3, 3), 1), 3))))
"work done by the tank in 1 hour = ( 1 / 3 - 3 1 / 3 ) = 1 / 30 leak will empty the tank in 30 hrs . answer : c"