The average salary of 3 workers is Rs. 95 per week. If the first worker earns…
2024
The average salary of 3 workers is Rs. 95 per week. If the first worker earns Rs. 115 and the second worker earns Rs. 65, how much is the salary of the third worker?
Answer: C. 105 — Average = Total value ÷ Number of items, so Total value = Average × Number of items. Once the average and all-but-one of the individual values are known, this…
- A.
120
- B.
115
- C.
105
- D.
125
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Show answer & explanation
Correct answer: C
Average = Total value ÷ Number of items, so Total value = Average × Number of items. Once the average and all-but-one of the individual values are known, this relation gives the missing value directly.
Total salary of all 3 workers = Average × Number of workers = 95 × 3 = Rs 285.
First worker's salary = Rs 115 and second worker's salary = Rs 65, so their combined salary = 115 + 65 = Rs 180.
Let the third worker's salary be x. Since the three salaries add up to the total, 180 + x = 285.
Solving for x: x = 285 − 180 = Rs 105.
Check: 115 + 65 + 105 = 285, and 285 ÷ 3 = 95, which matches the given average — confirming the third worker's salary is Rs 105.