Multiple choice

A certain number of men complete a piece of work in 60 days. If there were 8 men more, the work could be finished in 10 days less. then how many number of men in orignal? कुछ आदमी एक कार्य को 60 दिन में पूरा करते है। यदि 8 आदमी और हो तो कार्य 10 दिन कम में पूरा हो सकता है। तो प्रारंभ में आदमियों की संख्या कितनी थी ?

  1. 32

  2. 36

  3. 30

  4. 40
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let m be the original number of men. Work = m × 60 man-days. With (m+8) men: (m+8) × 50 = m × 60. Solving: 50m + 400 = 60m, so 10m = 400, giving m = 40 men. Verification: 40 × 60 = 2400 man-days, and 48 × 50 = 2400 man-days. Both calculations match.

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