For tbe base case in this section, as a percenrage of sales, COGS =72 pereent, SGA =14 peront, R. D -2.3 percent, Depreciation, Interest expense are fixed as stated. Tax Rate is 21 percent. Givea the follewing esse, calculate the indcpendent cffoxs of a 1 pereent increase in Gross I Mnrpin, a I percent decrease in the TnxRate, and a 5 perceot increase in Sales. Coslossal Chemical Coxpuraticon Ycar Euded December 31, 201 ( 5000,000 omitted)