A and B, working together can finish a piece of work in 156 days, while B alone can do it in 390 days. How many days will A alone take to finish it?

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OSSC CGL 2022 Official Paper (Held on: 14th Oct Shift 2)
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  1. 280
  2. 250
  3. 270
  4. 260

Answer (Detailed Solution Below)

Option 4 : 260
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Detailed Solution

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Calculation:

LCM of 156 and 390 = 780

F1 Vilas State Govt 7.12.2022 D4

Now, the efficiency of A = 5 - 2 = 3

A will alone take to finish the total work = 780 / 3 = 260 days

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