Pens Cost Calculator is a free online tool that is used to find the cost of pens. Calculate the cost of pens in different models using the Pens Cost Calculator. It is very simple to use the pens cost calculator. All you have to do is just enter the values in the input field and get the output.

## How to use Pens Cost Calculator?

Beginners can know how to use the pens cost calculator online for free from here.

**Step 1:** Enter the required values in the input field.

**Step 2:** Click on the calculate button.

**Step 3:** After some time the output values will be displayed on the screen.

### Example Problems on Pens Cost

Know how to find the cost of pens using the pens cost with the help of some examples.

**1. If the cost price of 6 pens is equal to the selling price of 4 pens. Find the profit or loss percent.**

Solution:

Let the CP of each pen be Rs. 1

Hence, the cost of the whole packet will be = Rs. 6

CP of the new packet with 4 pens = Rs. 4

Profit on Rs. 6 = Rs. 2 (6 - 2 = 4)

2/4 × 100 = 50%

So, the profit is 50%.

**2. 50 pens cost x dollars. How many pens can be purchased for 50 cents, assuming the same rate?**

Solution:

Given,

Cost of 50 pens = x dollars.

Cost of 1 pen = x/50 dollars

The number of pens that can be purchased for 25 cents i.e. 0.25 dollars.

Cost of n pens = Number of pens that can be purchased/cost of 1 pen

= (0.25 dollars) / (x/100dollars)

So we get

= 25/x pens

Therefore, 25/x pens can be purchased for 25 cents.

**3. If the selling price of 10 pens is the same as the cost price of 12 pens then the gain percent is**

Solution:

The selling price of 10 pens = Cost price of 12 pens = Rs. 100

SP of 1 pen = 100/10 = Rs. 10

CP of 1 pen = 100/12 = 25/3

Gain = SP - CP = 10 - 25/3 = 5/3

Gain% = Total gain × 100/CP

= 5 × 100 × 3/(3 × 25) = 20%

So, the gain percent is 20%

### FAQs on Pens Cost Calculator

**1. The cost of 1 pen is Rs. 10. What is the cost of 5 pens?**

Solution:

The cost of 1 pen is Rs. 10.

5 pens = 5 × 10 = Rs. 50

So, the cost of 5 pens is Rs. 50

**2. If two pens cost $20. Then what is the cost of 1 pen?**

Solution:

Cost of 2 pens = $20

Cost of 1 pen = x

2x = 20

x = 20/2

x = 10

So, the cost of 1 pen is $10.

**3. How many pens are in a dozen?**

There are 12 pens in a dozen.