Bank Exam Practice Material Series Page 10 | Average Practice Set with Answers & Shortcut Tricks

 

 Bank Exam Practice Material Series – Page 10

Average Practice Set with Answers & Shortcut Tricks

Shaktimatha Learning – Bank Exam Practice Hub
Learn Average shortcut tricks, missing value methods, combined averages, and fast aptitude solving techniques for Bank Exams, SSC, Railways, Insurance, and Competitive Exams.

 Importance of Average in Bank Exams

Average is one of the most important arithmetic topics in:

• Bank Exams
• SSC
• Railway Exams
• Insurance Exams

This section tests:

• Numerical ability
• Fast calculations
• Logical reasoning
• Data interpretation skills

🎯 Important Average Concepts

Questions are mainly based on:

• Basic average
• Weighted average
• Missing value
• Average age problems
• Average marks
• Combined average

 Average Formula

0

 Combined Average Formula

1

 Shortcut Tricks

Concept	Shortcut
Average	Sum ÷ Count
Total Sum	Average × Number
Missing value	Total − Known values
Combined average	Add total sums
Equal increase	Average also increases

Practice Questions

Q1. Find average of 10, 20, 30, 40, 50.

Solution:

Sum = 150

150 ÷ 5

✅ Answer = 30

Q2. Average of 5 numbers is 20. Find total sum.

Solution:

20 × 5

✅ Answer = 100

Q3. Average of 8 students is 60. Find total marks.

Solution:

60 × 8

✅ Answer = 480

Q4. Find average of 12, 18, 24, 30, 36.

Solution:

Sum = 120

120 ÷ 5

✅ Answer = 24

Q5. Average age of 4 persons is 25 years. Find total age.

Solution:

25 × 4

✅ Answer = 100 years

Q6. Average of 6 numbers is 15. If one number is removed, average becomes 14. Find removed number.

Solution:

Original total = 15 × 6 = 90

New total = 14 × 5 = 70

Removed number = 90 − 70

✅ Answer = 20

Q7. Average marks of 10 students is 50. Find total marks.

Solution:

50 × 10

✅ Answer = 500

Q8. Find average of first 5 natural numbers.

Solution:

1 + 2 + 3 + 4 + 5 = 15

15 ÷ 5

✅ Answer = 3

Q9. Average salary of 4 workers is ₹5000. Find total salary.

Solution:

5000 × 4

✅ Answer = ₹20,000

Q10. Average of two numbers is 40. One number is 30. Find other number.

Solution:

Total = 40 × 2 = 80

Other number = 80 − 30

✅ Answer = 50

 Observation Tricks

• Use Average × Number quickly
• Avoid lengthy addition
• Observe missing value logic
• Practice mental calculations daily

 Important Average Formulas

Topic	Formula
Average	Sum/Count
Total Sum	Average × Count
Combined Average	Total Sum/Total Count
Missing Value	Total − Known Values
New Average	Updated Total/Count

🎯 Daily Practice Strategy

• Practice average calculations
• Practice missing value problems
• Revise combined averages
• Practice age-based questions
• Practice marks & salary problems

This improves:

• Arithmetic speed
• Logical reasoning
• Competitive exam confidence

“Strong Average Concepts Make Calculations Simple and Scoring.”

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Bank Exam Practice Material Series