M is thrice as efficient as workman N and therefore is able to finish a job in 262 days less than N. Then in how many days can N finish the entire work?

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UP Police SI (दरोगा) Official PYP (Held On: 23 Nov 2021 Shift 1)
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  1. 383
  2. 363
  3. 393
  4. 373

Answer (Detailed Solution Below)

Option 3 : 393
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UP Police SI (दरोगा) Official PYP (Held On: 2 Dec 2021 Shift 1)
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Detailed Solution

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Given:

Efficiency of M = 3 × Efficiency of N

Time difference = 262 days

Formula used:

Work = Efficiency × Time

If M is 3 times as efficient as N, then Time taken by M = (1/3) × Time taken by N

Calculation:

Let time taken by N = x days

Time taken by M = x/3 days

Time difference = Time taken by N - Time taken by M

⇒ 262 = x - x/3

⇒ 262 = 2x/3

⇒ x = (262 × 3) / 2

⇒ x = 393

∴ N can finish the entire work in 393 days.

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