30 men can complete a piece of work in 18 days. in how many days will 27 men complete the same work?	Choose the correct choice from the following choices
A) 20  B) 77  C) 36  D) 25  E) 13
<gadget id="calculator">18 * 30</gadget>
<output>540</output>

<gadget id="calculator">540 / 27</gadget>
<output>20</output>

<result>A</result>
30 men can complete a piece of work in 18 days. in how many days will 27 men complete the same work?
divide(multiply(18, 30), 27)
"explanation : less men , means more days { indirect proportion } let the number of days be x then , 27 : 30 : : 18 : x [ please pay attention , we have written 27 : 30 rather than 30 : 27 , in indirect proportion , if you get it then chain rule is clear to you : ) ] { \ color { blue } x = \ frac { 30 \ times 18 } { 27 } } x = 20 so 20 days will be required to get work done by 27 men . answer : a"