यदि 6 वर्ष पहले मेरी आयु का 80%, 10 वर्ष बाद मेरी आयु के 60% के समान है। मेरी वर्तमान आयु के अंकों का गुणनफल क्या है?

  1. 24
  2. 20
  3. 30
  4. 15

Answer (Detailed Solution Below)

Option 2 : 20
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Detailed Solution

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माना कि मेरी वर्तमान आयु x है

⇒ छह वर्ष पहले मेरी आयु होगी = (x - 6)

⇒ 10 वर्ष के बाद मेरी आयु = (x + 10)

प्रश्न के अनुसार

⇒ (x – 6) का 80% =  (x + 10) का 60%

⇒ 4x – 24 = 3x + 30

⇒ x = 54

∴ अंकों का गुणनफल = 5 × 4 = 20

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