Rajesh, Bahadur, and Amir earn an average income of Rs. 8000 per month. Their average monthly expenditure is Rs. 5000. What is their average monthly savings?

Introduction / Context:
Average savings can be computed by subtracting average expenditure from average income, or by using totals. Both routes yield the same result because subtraction distributes over averages for equally sized groups.

Given Data / Assumptions:

• Average income per person = Rs. 8000
• Average expenditure per person = Rs. 5000
• Three people in total

Concept / Approach:
Average savings = average income - average expenditure. Alternatively, compute total income and total expenditure, then subtract and divide by the count.

Step-by-Step Solution:

Verification / Alternative check:
Both methods agree exactly, confirming arithmetic consistency.

Why Other Options Are Wrong:

• Rs. 5000 and Rs. 2500: Do not match the computed difference.
• Rs. 9000: This is the total savings, not per-person average.
• None of these: A correct option exists (Rs. 3000).

Common Pitfalls:
Confusing total and average amounts or mixing per-person figures with totals across the group.

Final Answer:
Rs. 3000