10 men do a work in 10days. How many men are needed to finish the work in 2days?	Select: A) 50 B) 20 C) 30 D) 10 E) 15
men required to finish the work in 2days = 10*10/2= 
<gadget id="calculator">10*10/2</gadget>
<output>50</output>
50   50nswer is 50
<result>A</result>
10 men do a work in 10days. How many men are needed to finish the work in 2days?