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1.

If 40 men can make 30 boxes in 20 days. How many more men are needed to make 60 boxes in 25 days?

  • A. 24
  • B. 24
  • C. 24
  • D. 24

Answer: Option A

Explanation:

 ধরি, 25 দিনে 60 টি বক্স তৈরি করতে x জন লোক লাগবে।∴40+x জন লোক 25 দিনে 60 টি বক্স তৈরি করতে পারে40 জন লোক 20 দিনে তৈরি করে 30 টি বক্স ∴40+x  জন লোক 25 দিনে তৈরি করে=3040+x×2540×20প্রশ্নমতে,3040+x×2540×20=60⇒40+x=60×60×2040×20⇒40+x=64⇒x=64-40∴x=24

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