sixty men can build a wall in 40 days.but they begin the work together,5 men quit after 10 day.the time needed to build the wall is Choose the correct choice from the following options.
A) 42.72 days B) 52.72 days C) 46.72 days D) 48.72 days E) 62.72 days
actually 60 men can build a wall in 40 days   suppose same 60 men work for 10 days   then 5 men quit 55 men work for remaining 30 days   then finally remaining work will be   30 * 5= 
<gadget id="calculator">  30 * 5</gadget>
<output>150</output>
150 days work   the 55 men can do the 150 days work in 2.72 days   for completion they will take 42.72 days   42.72 daysNSWER:42.72 days
<result>A</result>
sixty men can build a wall in 40 days.but they begin the work together,5 men quit after 10 day.the time needed to build the wall is