3 pumps, working 8 hours a day, can empty a tank in 2 days. how many hours a day must 12 pumps work to empty the tank in 1 day?
Choose the correct answer
A) 4 B) 10 C) 11 D) 12 E) 13
<gadget id="calculator">3 * 8</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<gadget id="calculator">48 / 12</gadget>
<output>4</output>

<result>A</result>
3 pumps, working 8 hours a day, can empty a tank in 2 days. how many hours a day must 12 pumps work to empty the tank in 1 day?
divide(multiply(multiply(3, 8), 2), 12)
"3 pumps take 16 hrs total ( 8 hrs a day ) if 1 pump will be working then , it will need 16 * 3 = 48 hrs 1 pump need 48 hrs if i contribute 12 pumps then 48 / 12 = 4 hrs . answer : a"