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A typist at an office of a company receives on an average 20 letters per day for typing. The typist works 8 hours a day and it takes on the average 20 minutes to type a letter. The cost of a letter waiting to be mailed is 80 paise per hour and the cost of the equipment plus salary of the typist is Rs. 45 per day. What will be the total daily cost of waiting letters to be mailed?
  • a)
    77
  • b)
    77
Correct answer is between ' 77, 77'. Can you explain this answer?
Most Upvoted Answer
A typist at an office of a company receives on an average 20 letters ...
λ = 20 /day
Working hours = 8 hrs.
Cost of letter waiting to be mailed
= 80 paise/hr
= 0.8 Rs/hr.
Cost of equipment + Salary = Rs. 45/day
Total daily cost of waiting letters
= LS × cost/letter/hr × 8 +(cost of equipment + Salary)
= 5 × 0.8 × 8 + 45 = 32 + 45 = Rs. 77
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Community Answer
A typist at an office of a company receives on an average 20 letters ...
Given data:
- Average number of letters received per day = 20
- Time taken to type a letter = 20 minutes = 1/3 hour
- Typist works for 8 hours a day
- Cost of a letter waiting to be mailed = 80 paise per hour
- Cost of equipment and typist salary per day = Rs. 45

To find: Total daily cost of waiting letters to be mailed

Calculations:
- Total time available for typing = 8 hours = 480 minutes
- Time taken to type 20 letters = 20 x (1/3) hours = 6.67 hours = 400 minutes
- Time left for waiting letters = 480 - 400 = 80 minutes
- Cost of waiting for 1 letter = 80 paise per hour = 80/60 paise per minute = 4/3 paise per minute
- Cost of waiting for 20 letters = (4/3) x 80 = 320/3 paise = Rs. 10.67
- Total daily cost = Cost of waiting letters + Cost of equipment and typist salary per day = Rs. 10.67 + Rs. 45 = Rs. 55.67

Therefore, the total daily cost of waiting letters to be mailed is Rs. 55.67. The given options are incorrect.
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A typist at an office of a company receives on an average 20 letters per day for typing. The typist works 8 hours a day and it takes on the average 20 minutes to type a letter. The cost of a letter waiting to be mailed is 80 paise per hour and the cost of the equipment plus salary of the typist is Rs. 45 per day. What will be the total daily cost of waiting letters to be mailed?a) 77b) 77Correct answer is between ' 77, 77'. Can you explain this answer?
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A typist at an office of a company receives on an average 20 letters per day for typing. The typist works 8 hours a day and it takes on the average 20 minutes to type a letter. The cost of a letter waiting to be mailed is 80 paise per hour and the cost of the equipment plus salary of the typist is Rs. 45 per day. What will be the total daily cost of waiting letters to be mailed?a) 77b) 77Correct answer is between ' 77, 77'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A typist at an office of a company receives on an average 20 letters per day for typing. The typist works 8 hours a day and it takes on the average 20 minutes to type a letter. The cost of a letter waiting to be mailed is 80 paise per hour and the cost of the equipment plus salary of the typist is Rs. 45 per day. What will be the total daily cost of waiting letters to be mailed?a) 77b) 77Correct answer is between ' 77, 77'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A typist at an office of a company receives on an average 20 letters per day for typing. The typist works 8 hours a day and it takes on the average 20 minutes to type a letter. The cost of a letter waiting to be mailed is 80 paise per hour and the cost of the equipment plus salary of the typist is Rs. 45 per day. What will be the total daily cost of waiting letters to be mailed?a) 77b) 77Correct answer is between ' 77, 77'. Can you explain this answer?.
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