If the cost of 12 pens is ₹ 138, then the cost of 14 such pens is

Options

A. ₹ 164
B. ₹161
C. ₹118.30
D. ₹ 123.50

Answer

To find the cost of 14 pens when the cost of 12 pens is ₹138, we can follow these steps:

### Step 1: Find the cost of one pen.
To find the cost of one pen, we divide the total cost of 12 pens by the number of pens.

\[ \text{Cost of one pen} = \frac{\text{Total cost of 12 pens}}{\text{Number of pens}} = \frac{138}{12} \]

### Step 2: Calculate the cost of one pen.
Now we perform the division:

\[ \frac{138}{12} = 11.5 \]

So, the cost of one pen is ₹11.5.

### Step 3: Find the cost of 14 pens.
Now that we know the cost of one pen, we can find the cost of 14 pens by multiplying the cost of one pen by 14.

\[ \text{Cost of 14 pens} = \text{Cost of one pen} \times 14 = 11.5 \times 14 \]

### Step 4: Calculate the cost of 14 pens.
Now we perform the multiplication:

\[ 11.5 \times 14 = 161 \]

So, the cost of 14 pens is ₹161.

### Final Answer:
The cost of 14 pens is ₹161.

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