A shopkeeper buys an article for Rs 450. He marks it at 20% above the cost price. Find :
the marked price of the article.

Answer

To find the marked price of the article, we can follow these steps:

### Step 1: Identify the Cost Price (CP)
The cost price of the article is given as Rs 450.

### Step 2: Calculate 20% of the Cost Price
To find the marked price, we need to calculate 20% of the cost price.

\[ \text{20% of CP} = \frac{20}{100} \times \text{CP} = \frac{20}{100} \times 450 \]

### Step 3: Simplify the Calculation
Now, we can simplify the calculation:

\[ \frac{20}{100} \times 450 = \frac{20 \times 450}{100} = \frac{9000}{100} = 90 \]

### Step 4: Calculate the Marked Price
The marked price (MP) is the cost price plus the 20% calculated above.

\[ \text{MP} = \text{CP} + \text{20% of CP} = 450 + 90 \]

### Step 5: Final Calculation
Now, we can add the two amounts:

\[ \text{MP} = 450 + 90 = 540 \]

### Conclusion
The marked price of the article is Rs 540.

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