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একটি সংখ্যাকে 50% বৃদ্ধি করা হলে, সেটি 2490 হয়। সংখ্যাটি হল:

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  1. 1660
  2. 4980
  3. 830
  4. 3320

Answer (Detailed Solution Below)

Option 1 : 1660
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প্রদত্ত:

একটি সংখ্যাকে 50% বৃদ্ধি করলে 2490 পাওয়া যায়।

গণনা:

ধরি, সংখ্যাটি x।

x + 0.5x = 2490

⇒ 1.5x = 2490

⇒ x = 2490 / 1.5

⇒ x = 1660

∴ সঠিক উত্তর হল বিকল্প (1)।

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