A man's pension on retirement from service is equal to half the average salary during last 3 years of his service. His salary from 1-1-1983 is Rs 380 per month with - increment of Rs40 due on 1-10 -83, 1-10-84 and 1-1085. If he retires on 1-1-86, what pension does he draw?
सेवानिवृति पर एक आदमी की पेंशन, उसकी सेवा के अंतिम 3 वर्षों के दौरान औसत वेतन के आधे के बराबर है। उसका वेतन 1-1-88 से Rs 380 प्रति माह है, 1-10-83, 1-10-84 तथा 1-10-84 तथा 110-85 को Rs40 की वृद्धि के साथ। यदि वह 1-1-86 को सेवानिवृत हुआ हो, तो उसे कितनी पेन्शन मिलती है?

Options

A. Rs 205
B. Rs 215
C. Rs225
D. Rs 230

Explanation

To solve the problem step by step, we will calculate the man's total salary over the last three years of his service, find the average monthly salary, and then determine his pension based on that average.

### Step 1: Determine the salary for each period
1. **From 1-1-1983 to 30-9-1983** (9 months):
- Salary = Rs. 380 per month
- Total for this period = 9 months × Rs. 380 = Rs. 3,420

2. **From 1-10-1983 to 30-9-1984** (12 months):
- Salary = Rs. 420 per month (increment of Rs. 40)
- Total for this period = 12 months × Rs. 420 = Rs. 5,040

3. **From 1-10-1984 to 30-9-1985** (12 months):
- Salary = Rs. 460 per month (another increment of Rs. 40)
- Total for this period = 12 months × Rs. 460 = Rs. 5,520

4. **From 1-10-1985 to 31-12-1985** (3 months):
- Salary = Rs. 500 per month (final increment of Rs. 40)
- Total for this period = 3 months × Rs. 500 = Rs. 1,500

### Step 2: Calculate the total salary over the last three years
Total Salary = Salary from 1-1-1983 to 30-9-1983 + Salary from 1-10-1983 to 30-9-1984 + Salary from 1-10-1984 to 30-9-1985 + Salary from 1-10-1985 to 31-12-1985

Total Salary = Rs. 3,420 + Rs. 5,040 + Rs. 5,520 + Rs. 1,500 = Rs. 15,480

### Step 3: Calculate the average monthly salary
- The total period of service considered is 36 months (3 years).
- Average Monthly Salary = Total Salary / Total Months = Rs. 15,480 / 36 = Rs. 430

### Step 4: Calculate the pension
- The pension is equal to half of the average monthly salary.
- Pension = Average Monthly Salary / 2 = Rs. 430 / 2 = Rs. 215

### Final Answer
The man's pension on retirement is **Rs. 215**.

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