If 20 men can build a wall 66 metres long in 4 days, what length of a similar can be built by 86 men in 8 days?
Choices.
A) 278.4 mtrs
B) 378.4 mtrs
C) 478.4 mtrs
D) 488.4 mtrs
E) 567.6 mtrs
If 20 men can build a wall 66 metres long in 4 days,   length of a similar wall that can be built by 86 men in 8 days = (66*86*8)/(4*20)= 
<gadget id="calculator">(66*86*8)/(4*20)</gadget>
<output>2_838/5 = around 567.6</output>
567.6 mtrs   ANSW567.6 mtrsR:567.6 mtrs
<result>E</result>
If 20 men can build a wall 66 metres long in 4 days, what length of a similar can be built by 86 men in 8 days?