renu can do a piece of work in 6 days, but with the help of her friend suma, she can do it in 5 days. in what time suma can do it alone?  Choose one:
A) 10 B) 12 C) 14 D) 15 E) 30
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/5) - (1/6)</gadget>
<output>1/30 = around 0.033333</output>

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

<result>E</result>
renu can do a piece of work in 6 days, but with the help of her friend suma, she can do it in 5 days. in what time suma can do it alone?
inverse(subtract(divide(const_1, 5), divide(const_1, 6)))
renu â € ™ s one day â € ™ s work = 1 / 6 suma â € ™ s one day â € ™ s work = 1 / 5 - 1 / 6 = 1 / 30 suma can do it alone in 30 days . answer : e