Akhil can complete a piece of work in 24 days. Shyam can complete the same piece of work in 12 days. If both of them work together, in how many days can they complete the same piece of work?

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SSC CHSL Exam 2024 Tier-I Official Paper (Held On: 04 Jul, 2024 Shift 4)
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  1. 10 days
  2. 12 days
  3. 8 days
  4. 6 days

Answer (Detailed Solution Below)

Option 3 : 8 days
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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug 2023 Shift 1)
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100 Questions 200 Marks 60 Mins

Detailed Solution

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Given:

Akhil can complete a piece of work in 24 days.

Shyam can complete the same piece of work in 12 days.

Formula used:

Work rate of Akhil = 1/24 work/day

Work rate of Shyam = 1/12 work/day

Total work rate when working together = 1/24 + 1/12

Time taken to complete the work together = 1 / (Total work rate)

Calculation:

Total work rate = 1/24 + 1/12

⇒ Total work rate = 1/24 + 2/24

⇒ Total work rate = 3/24

⇒ Total work rate = 1/8

Time taken to complete the work together = 1 / (1/8)

⇒ Time taken = 8 days

∴ The correct answer is option (3).

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