Answer:

21.) In our $1.00 soup example, we could calculate the necessary markup in our heads without using a fancy formula or a calculator. How do we calculate markup and customer price if we have an item cost of $0.79 and a 30% markup? We'll just use these processes:

Start with the formula: markup = gross profit / cost

Fill in what we know: 30% = gross profit / $0.79

Simplify the equation: .30 x $0.79 = gross profit

Solve for gross profit: $0.24 = gross profit

Add to the original cost: $0.24 + $0.79 = $1.03

And there we have it; to markup the $0.79 cent can of soup 30%, we need to add $0.24 and price it for sale at $1.03.

22.) Just take sale price, multiply it by the commission percentage, divide it by 100. An example calculation: a blue widget is sold for $70. The sales person works on a commission - he/she gets 14% out of every transaction, which amounts to $9.80.

So the formula is: commission_amount = sale price * commission_percentage / 100.

So now you know how to calculate commission. Now that you have this figure, there's a problem of who will cover this cost - usually it's the selling party (whoever hired the sales person to do the job). To calculate their revenue, we need to calculate the percentage decrease: real_revenue = sale_price - sale_price * commission_percentage / 100. In our example, it's $70 - $70 * 14 / 100 = $70 - $9.80 = $61.20.

It's not very common, but sometimes it's the buyer who pays for the sales person's remuneration. In those cases we need the percentage increase formula: price_with_commission = base_price + base_price * commission_percentage / 100. In our example, it's $70 + $70 * 14 / 100 = $70 + $9.80 = $79.80.

Step-by-step explanation:

pafllw, hrt, cmmnt and brainliest na din po. salamat.