Please help!

Each of the following gross profit percentages is expressed in terms of cost. 1. 40%. 2. 50% 3. 66.67%. 4. 100%. Indicate the gross profit percentage in terms of sales for each of the above. (Round answers to 2 decimal places, e.g. 78.73%.) Gross profit in Gross profit in terms of cost terms of sales 1. 40% % 2. 50% % 3. 66.67% % 4. 100% %