पीटर आणि प्रीतीच्या वयात 5 वर्षांचा फरक आहे. 35 वर्षांपूर्वी जेव्हा त्यांनी एकमेकांशी लग्न केले होते, तेव्हा  पीटरच्या वयाची 4 पट प्रीतीच्या वयाच्या 5 पटीइतकी होती. त्यांच्या वयाची सध्याची बेरीज किती आहे?

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RRB ALP Previous Paper 6 (Held On: 13 Aug 2018 Shift 1)
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  1. 105 वर्षे
  2. 110 वर्षे
  3. 115 वर्षे
  4. 112 वर्षे

Answer (Detailed Solution Below)

Option 3 : 115 वर्षे
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पीटर आणि प्रीतीचे वय अनुक्रमे A आणि B मानू.

पीटर आणि प्रीतीच्या वयात 5 वर्षांचा फरक आहे,

⇒ A – B = 5

35 वर्षांपूर्वी, पीटरच्या वयाची 4 पट प्रीतीच्या वयाच्या 5 पटीइतकी होती,

⇒ 4(A – 35) = 5(B – 35)

⇒ 4A – 140 = 5B – 175

⇒ 5B – 4A = 35

सोडवल्यानंतर,

⇒ 5B – 4(5 + B) = 35

⇒ 5B – 20 – 4B = 35

⇒ B = 55

⇒ A = 60

∴ त्यांच्या सध्याच्या वयाची बेरीज = 60 + 55 = 115 वर्षे
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