30.The manager of Contemporary Casuals was trying to determi

30.The manager of Contemporary Casuals was trying to determine if the gross marginreturn on investment had improved from last year. This year the averageinventory at cost was $62,900 while last year it was $61,600. Last year netsales were $280,779 and this year they improved to $281,444. The gross marginpercent for last year was 52.00% and this year it was 52.50%. Calculate theGMROI for this year and last year and determine if the GMROI has improved.