ram, who is half as efficient as krish, will take 18 days to complete a task if he worked alone. if ram and krish worked together, how long will they take to complete the task?
Choose the correct choice: A) 16 days B) 12 days C) 8 days D) 6 days E) 18 days
<gadget id="calculator">1 / 18</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/18) + (1/9)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / (1/6)</gadget>
<output>6</output>

<result>D</result>
ram, who is half as efficient as krish, will take 18 days to complete a task if he worked alone. if ram and krish worked together, how long will they take to complete the task?
inverse(add(divide(const_1, 18), divide(const_1, divide(18, const_2))))
"number of days taken by ram to complete task = 18 since ram is half as efficient as krish , amount of work done by krish in 1 day = amount of work done by ram in 2 days if total work done by ram in 18 days is 18 w amount of work done by ram in 1 day = w amount of work done by krish in 1 day = 2 w total amount of work done by krish and ram in a day = 3 w total amount of time needed by krish and ram to complete task = 18 w / 3 w = 6 days answer d"