60 boys can complete a work in 24 days. how many men need to complete twice the work in 20 days
Select
A) 144  B) 170  C) 180  D) 190  E) 200
<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<gadget id="calculator">60 * 48</gadget>
<output>2_880</output>

<gadget id="calculator">2_880 / 20</gadget>
<output>144</output>

<result>A</result>
60 boys can complete a work in 24 days. how many men need to complete twice the work in 20 days
divide(multiply(60, multiply(24, const_2)), 20)
"one man can complete the work in 24 * 60 = 1440 days = one time work to complete the work twice it will be completed in let m be the no . of worker assign for this therefore the eqn becomes m * 20 = 2 * 1440 m = 144 workers answer : a"