the eco of Newwak inc. has provided you with the following information for its operation for 2013. Dollar figures are in thousands sale revenue $200 cost of goods sold 120 total contribution margin 100 fixed costs: manufacting 40 fixed costs: selling and administrative 20 variable selling expense 20 the tax rate for Newark is 25% if they want to increase the after-tax income for 2014 by $12, by how much do they have to increase their sales revenue? assume everything else stay constant