# uh oh

if pencils cost 20 cents and pens cost 30 cents each find the cost of the following items number 36 has r pens and p pencils

## To find the cost of the items with a certain number of pens and pencils, we need to use the given prices per item.

Let's start by calculating the cost of one item with r pens. Each pen costs 30 cents, so the cost of r pens would be 30 cents multiplied by r.

Cost of r pens = 30 cents * r

Next, let's calculate the cost of one item with p pencils. Each pencil costs 20 cents, so the cost of p pencils would be 20 cents multiplied by p.

Cost of p pencils = 20 cents * p

Finally, we can calculate the total cost of one item with r pens and p pencils by summing up the individual costs of the pens and pencils.

Total cost of one item with r pens and p pencils = Cost of r pens + Cost of p pencils

Substituting the formulas we calculated earlier:

Total cost of one item with r pens and p pencils = (30 cents * r) + (20 cents * p)

So, the cost of the item with 36 pens (r) and p pencils is:

Total cost = (30 cents * 36) + (20 cents * p)

To calculate the total cost, you need to know the value of p.