Sundaram bought a toothpaste for Rs 18.75, soap for Rs 6 and shoe polish for Rs 12.50. He gave a fifty rupee note to the shopkeeper. Find the money he got back.

Answer

To find out how much money Sundaram got back after his purchases, we can follow these steps:

### Step 1: Calculate the total amount spent
First, we need to add up the prices of the items Sundaram bought.

- Price of toothpaste = Rs 18.75
- Price of soap = Rs 6.00
- Price of shoe polish = Rs 12.50

Now, we will add these amounts together:

\[ \text{Total amount spent} = 18.75 + 6.00 + 12.50 \]

### Step 2: Perform the addition
Let's add them step by step:

1. Add Rs 18.75 and Rs 6.00:
\[ 18.75 + 6.00 = 24.75 \]

2. Now add Rs 12.50 to the result:
\[ 24.75 + 12.50 = 37.25 \]

So, the total amount spent is Rs 37.25.

### Step 3: Calculate the change received
Next, we need to find out how much money Sundaram got back after giving the shopkeeper a Rs 50 note.

\[ \text{Change received} = \text{Amount given} - \text{Total amount spent} \]
\[ \text{Change received} = 50.00 - 37.25 \]

### Step 4: Perform the subtraction
Now, let's subtract Rs 37.25 from Rs 50.00:

1. Align the numbers for subtraction:
\[ \begin{array}{r} 50.00 \\ -37.25 \\ \hline \end{array} \]

2. Start from the rightmost digit:
- In the hundredths place: 0 - 5 → we need to borrow 1 from the tenths place.
- In the tenths place: 0 (after borrowing, it becomes 9) - 2 = 8.
- In the units place: 10 - 7 = 3 (after borrowing).
- In the tens place: 4 - 3 = 1.

So, we get:
\[ \text{Change received} = 12.75 \]

### Final Answer
Sundaram got back Rs 12.75.

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