Five electronics shops have 20, 30, 60, 80, and 50 TV sets respectively. What is the average number of TV sets per shop?

Introduction / Context:
Average inventory questions test straightforward mean computation. Keeping track of totals and counts is the central skill.

Given Data / Assumptions:

• TV sets: 20, 30, 60, 80, 50
• Number of shops = 5

Concept / Approach:
Average = total units / number of shops. Grouping numbers helps reduce mistakes during addition.

Step-by-Step Solution:

Verification / Alternative check:
The mean 48 is close to the middle values and balances the distribution between low (20, 30) and high (60, 80) counts, confirming reasonableness.

Why Other Options Are Wrong:

• 24: Exactly half the correct value; likely divided by 10 by mistake.
• 50 and 60: Above the computed mean; not supported by the totals.
• None of these: A correct option (48) exists.

Common Pitfalls:
Arithmetic slips when multiple terms are added, or dividing by the wrong count of shops.

Final Answer:
48