Rahul purchased 124 notebooks Sunil purchased 86 notebooks, Manish purchased 132 notebooks and Mona purchased 146 notebooks. What was the average number of notebooks they purchased?

Options

A. 112
B. 122
C. 488
D. 98

Answer

To find the average number of notebooks purchased by Rahul, Sunil, Manish, and Mona, we can follow these steps:

### Step 1: Write down the number of notebooks purchased by each person.
- Rahul: 124 notebooks
- Sunil: 86 notebooks
- Manish: 132 notebooks
- Mona: 146 notebooks

### Step 2: Calculate the total number of notebooks purchased.
We will sum the notebooks purchased by each individual:

\[ \text{Total} = 124 + 86 + 132 + 146 \]

### Step 3: Perform the addition.
Let's add them step by step:

1. First, add Rahul's and Sunil's notebooks:
\[ 124 + 86 = 210 \]

2. Next, add Manish's notebooks:
\[ 210 + 132 = 342 \]

3. Finally, add Mona's notebooks:
\[ 342 + 146 = 488 \]

So, the total number of notebooks purchased is 488.

### Step 4: Count the total number of individuals.
There are 4 individuals (Rahul, Sunil, Manish, and Mona).

### Step 5: Calculate the average.
The average is calculated using the formula:

\[ \text{Average} = \frac{\text{Total number of notebooks}}{\text{Total number of individuals}} = \frac{488}{4} \]

### Step 6: Perform the division.
Now, divide 488 by 4:

\[ 488 \div 4 = 122 \]

### Final Answer:
The average number of notebooks purchased is **122**.

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