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A man saves 200 in each of the first three months of his service. In each of the subsequent months his saving increases by 40 more than the saving of immediately previous month. His total saving from the start of service will be 11040 after [2011]
  • a)
    19 months
  • b)
    20 months
  • c)
    21 months
  • d)
    18 months
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A man saves 200 in each of the first three months of his service. In ...
Let required number of months = n
∴ 200 × 3 + (240 + 280 + 320 + ... +  (n – 3)th term) = 11040
⇒ (n - 3)[240 + 20n - 80]= 10440
⇒ (n - 3)(20n + 160)= 10440
⇒ (n - 3)(n + 8)= 522
⇒ n2 + 5n - 546=0
⇒  (n + 26) (n – 21) = 0
∴ n = 21
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A man saves 200 in each of the first three months of his service. In each of the subsequent months his saving increases by 40 more than the saving of immediately previous month. His total saving from the start of service will be 11040 after [2011]a)19 monthsb)20 monthsc)21 monthsd)18 monthsCorrect answer is option 'C'. Can you explain this answer?
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A man saves 200 in each of the first three months of his service. In each of the subsequent months his saving increases by 40 more than the saving of immediately previous month. His total saving from the start of service will be 11040 after [2011]a)19 monthsb)20 monthsc)21 monthsd)18 monthsCorrect answer is option 'C'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A man saves 200 in each of the first three months of his service. In each of the subsequent months his saving increases by 40 more than the saving of immediately previous month. His total saving from the start of service will be 11040 after [2011]a)19 monthsb)20 monthsc)21 monthsd)18 monthsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A man saves 200 in each of the first three months of his service. In each of the subsequent months his saving increases by 40 more than the saving of immediately previous month. His total saving from the start of service will be 11040 after [2011]a)19 monthsb)20 monthsc)21 monthsd)18 monthsCorrect answer is option 'C'. Can you explain this answer?.
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