Practice Questions
Concept Explanation
Salary average problems combine basic average with weighted/combined average concepts.
Key Formulas
- Total salary = Average salary ร Number of employees
- Combined average = (nโรSโ + nโรSโ) / (nโ + nโ)
- After increment: new average = old average + increment (if all get same raise)
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Q1 Easy
Average salary of 10 employees is Rs. 25,000. Total salary paid is:
ExplanationTotal = 25000 ร 10 = Rs. 2,50,000. -
Q2 Medium
Dept A: 20 employees, avg Rs. 30,000. Dept B: 30 employees, avg Rs. 40,000. Combined average is:
Explanation(600000 + 1200000)/50 = Rs. 36,000. -
Q3 Medium
Average salary of 8 workers is Rs. 15,000. A manager with Rs. 35,000 salary joins. New average is:
Explanation(120000 + 35000)/9 = Rs. 17,222 (approx). -
Q4 Medium
Average salary of 11 employees is Rs. 22,000. One employee earning Rs. 33,000 leaves. New average is:
Explanation(242000 โ 33000)/10 = Rs. 20,900. -
Q5 Easy
All 15 employees get a Rs. 2,000 raise. If old average was Rs. 18,000, new average is:
ExplanationUniform raise of Rs. 2,000 increases the average by Rs. 2,000 โ Rs. 20,000. -
Q6 Medium
Team X: 12 members, avg Rs. 25,000. Team Y: 18 members, avg Rs. 35,000. Combined average salary is:
Explanation(300000 + 630000)/30 = Rs. 31,000. -
Q7 Medium
Average salary of 6 employees is Rs. 12,000. A new employee joins and average becomes Rs. 13,000. New employee's salary is:
ExplanationOld sum = 72000. New sum = 91000. New employee = Rs. 19,000.
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Q8 Medium
Factory A: 25 workers, avg Rs. 16,000. Factory B: 15 workers, avg Rs. 24,000. Combined average is:
Explanation(400000 + 360000)/40 = Rs. 19,000. -
Q9 Hard
Average salary of 20 employees is Rs. 30,000. Highest salary Rs. 50,000 is replaced by Rs. 40,000. New average is:
ExplanationSum decreases by 10000. New average = 30000 โ 10000/20 = Rs. 29,500. -
Q10 Easy
If average salary of 8 employees is Rs. 14,000, total salary expenditure is:
ExplanationTotal = 14000 ร 8 = Rs. 1,12,000. -
Q11 Easy
Branch P: 10 employees, avg Rs. 28,000. Branch Q: 10 employees, avg Rs. 32,000. Combined average is:
ExplanationEqual groups: (28000 + 32000)/2 = Rs. 30,000. -
Q12 Medium
Average salary of 9 employees is Rs. 18,000. One employee with Rs. 27,000 salary leaves. New average is:
Explanation(162000 โ 27000)/8 = Rs. 16,875. -
Q13 Hard
Company has 100 employees at avg Rs. 25,000 and 50 at avg Rs. 40,000. Overall average salary is:
Explanation(2500000 + 2000000)/150 = Rs. 30,000. -
Q14 Medium
Average salary rises from Rs. 15,000 to Rs. 16,500 for 20 employees. Total increase in salary bill is:
ExplanationIncrease per employee = Rs. 1,500. Total = 1500 ร 20 = Rs. 30,000.
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DS1 Easy
What is the total salary paid?
Statement IAverage salary of 10 employees is Rs. 25,000.
Statement IIThere are 10 employees.
ExplanationStatement I alone: total = Rs. 2,50,000. -
DS2 Medium
What is the combined average salary?
Statement IDept A: 20 employees, average Rs. 30,000.
Statement IIDept B: 30 employees, average Rs. 40,000.
ExplanationNeed both departments. Combined average = Rs. 36,000.
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DS3 Medium
What is the new average after a manager joins?
Statement IAverage of 8 workers is Rs. 15,000.
Statement IIThe manager's salary is Rs. 35,000.
ExplanationTogether: (120000 + 35000)/9 = Rs. 17,222 (approx). -
DS4 Hard
Is the combined average above Rs. 30,000?
Statement ITeam X: 12 members, average Rs. 25,000.
Statement IITeam Y: 18 members, average Rs. 35,000.
ExplanationTogether: combined average = Rs. 31,000 > Rs. 30,000.