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 ?
"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 ) = 567.6 mtrs answer : e"
multiply(66, divide(multiply(86, 8), multiply(20, 4)))