सुधीर आणि आशिष यांचे सध्याचे वय 5 ∶ 7 या गुणोत्तरात आहे. बारा वर्षांपूर्वी त्यांच्या वयाचे गुणोत्तर 1 ∶ 2 होते. आजपासून पाच वर्षांनंतर सुधीरचे वय किती असेल?

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SSC CGL 2023 Tier-I Official Paper (Held On: 14 Jul 2023 Shift 3)
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  1. 20 वर्ष
  2. 25 वर्ष
  3. 33 वर्ष
  4. 28 वर्ष

Answer (Detailed Solution Below)

Option 2 : 25 वर्ष
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Detailed Solution

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दिलेले आहे: 

12 वर्षांपूर्वी, सुधीर आणि आशिष = 1 : 2

सुधीर आणि आशिषचे सध्याचे वय = 5 :7

वापरलेली संकल्पना:

आपण गुणोत्तर संकल्पना वापरणार आहोत.

गणना:

सुधीर आणि आशिष यांचे 12 वर्षांपूर्वीचे वय = अनुक्रमे 1x आणि 2x,

प्रश्नानुसार,

(1x + 12) / (2x + 12) = 5/7

⇒ 7x + 84 = 10x + 60

⇒ 3x = 24

⇒ x = 8

∴ सुधीरचे सध्याचे वय = 8 + 12 = 20 वर्षे

आजपासून पाच वर्षांनी सुधीरचे वय = 20 + 5 = 25

आजपासून पाच वर्षांनी सुधीरचे वय 25 वर्षे आहे.

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आपण प्रथम वयातील अंतर समतुल्य करू, कारण ते स्थिर राहते.ageF3 SSC Savita 09-10-23 D7

आजपासून पाच वर्षांनी सुधीरचे वय = 20 + 5 = 25

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