Kaylee James, a connoisseur of fine chocolate, opened Kaylee's Sweets in Collegetown on February $1.$ The shop

specializes in a selection of gourmet chocolate candies and a line of gourmet ice cream. You have been hired as manager.

Your duties include maintaining the store's financial records. The following transactions occurred in February, the first

month of operations.

a$.$ Received four shareholders' contributions totaling $$29,300$ cash to form the corporation; issued $400$ shares of $$0\mathrm{.}10$

par value common stock.

b$.$ Paid three months' rent for the store at $$1,790$ per month $($recorded as prepaid expenses$).$

c$.$ Purchased and received candy for $$6,200$ on account, due in $60$ days.

d$.$ Purchased supplies for $$1,330$ cash.

e$.$ Negotiated and signed a two$-$year $$12,000$ loan at the bank, receiving cash at the time.

f$.$ Used the money from $($e$)$ to purchase a computer for $$3,450($for recordkeeping and inventory tracking$)$; used the

balance for furniture and fixtures for the store.

g$.$ Placed a grand opening advertisement in the local paper for $$410$ cash; the ad ran in the current month.

h$.$ Made sales on Valentine's Day totaling $$3,100$;$$2,650$ was in cash and the rest on accounts receivable. The cost of

the candy sold was $$1,300.$

i$.$ Made a $$620$ payment on accounts payable.

j$.$ Incurred and paid employee wages of $$1,900.$

k$.$ Collected accounts receivable of $$180$ from customers.

I. Made a repair to one of the display cases for $$120$ cash.

$m.$ Made cash sales of $$2,900$ during the rest of the month. The cost of the candy sold was $$1,710.$

After three years in business, you are being evaluated for a promotion. One measure is how effectively you managed the sales and

expenses of the business. The following data are available:

$*$At the end of $2018,$ Kaylee decided to open a second store, requiring loans and inventory purchases prior to the store's opening in

early $2019.$

$5-$a$.$ Calculate the net profit margin ratio for each year. $($Round your answers to $1$ decimal place.$)$

How do I calculate the net profit margin ratio for each year?