Well working on this assignment I had difficulties and trouble understanding

What should be the initial markup percent in a children's store having the following planned gures? Net sales $280,000 Expenses 70,000 Prot 24,000 Shortages 2,200 Alteration costs 8,700 Employee discounts 2,800 Cash discounts 3,200 Markdowns 10,500 Determine the initial markup percent for a sporting goods store that has the following planned gures for a three-month period: Net sales $425,000 Prot 4.1% Expenses 30.0% Employee discounts $ 4,000 Cash discounts $ 7,000 Alteration costs 3.5% Shortages $ 3,825 Markdowns 6.4% What should be the initial markup percent in a department which has the following planned gures? Gross sales $565,000 Markdowns 5.2% Alteration costs $ 4,600 Employee discounts 0.9% Cash discounts 2.1% Shortages $ 1,800 Customer returns $ 5,000 Expenses $173,600 Prot 4.4% What initial markup percent will be required to achieve a 5.5 % prot? Employee discounts 1.1% Cash discounts 2.5 Alteration costs 3.0 Shortages l .0 Markdowns 5 0 Expenses 34.5