4 men can check exam papers in 8 days working 5 hours regularly. What is the total hours when 2 men will check the double of the papers in 20 days?	Choose the most appropriate option:	A) 8	B) 9	C) 6	D) 1	E) 5
Let a man can do 1 unit of work in 1 hour.   Total units of work = 4 x 8 x 5 = 160 units.   Now work = 2 x 160 = 320 units.   Now 2 men work for 20 days. Let in x hours they have to work per day.   Now total work = 2×x×20 = 40 x   40x = 320 So x = 320/40= 
<gadget id="calculator">320/40</gadget>
<output>8</output>
8 hours.   8nswer:8
<result>A</result>
4 men can check exam papers in 8 days working 5 hours regularly. What is the total hours when 2 men will check the double of the papers in 20 days?