Neha bought an old refrigerator for Rs 4800 and spend `20%` on its repairs. By how much should the cost price be increased to get a profit of Rs 1440 ?

Options

A. `30%`
B. `25 %`
C. `45 %`
D. `35%`

Answer

To solve the problem step-by-step, let's break it down:

### Step 1: Calculate the cost of repairs
Neha bought the refrigerator for Rs 4800 and spent 20% on repairs.

**Calculation:**
Repairs = 20% of Rs 4800
= (20/100) * 4800
= 0.20 * 4800
= Rs 960

### Step 2: Calculate the total cost price
Now, we add the cost of the refrigerator and the cost of repairs to find the total cost price.

**Calculation:**
Total Cost Price = Cost of Refrigerator + Cost of Repairs
= 4800 + 960
= Rs 5760

### Step 3: Determine the desired profit
Neha wants a profit of Rs 1440.

### Step 4: Calculate the selling price for the desired profit
To find out the selling price needed to achieve this profit, we add the desired profit to the total cost price.

**Calculation:**
Selling Price = Total Cost Price + Desired Profit
= 5760 + 1440
= Rs 7200

### Step 5: Calculate the increase in cost price
To find out by how much the cost price should be increased to achieve this selling price, we subtract the total cost price from the selling price.

**Calculation:**
Increase in Cost Price = Selling Price - Total Cost Price
= 7200 - 5760
= Rs 1440

### Final Answer
The cost price should be increased by Rs 1440 to achieve a profit of Rs 1440.

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