300 रुपये प्रति किलोचा आसाम चहा हा 400 रुपये प्रति किलोच्या दार्जिलिंग चहामध्ये किती प्रमाणात मिसळावा, जेणेकरून 408 रुपये प्रति किलो या दराने मिश्रण विकल्यास 20% नफा होईल.

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  1. 1 : 2
  2. 3 : 2
  3. 2 : 5
  4. 1 : 6

Answer (Detailed Solution Below)

Option 2 : 3 : 2
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RRB NTPC CBT-I Official Paper (Held On: 4 Jan 2021 Shift 1)
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दिलेल्याप्रमाणे:

300 रुपये प्रति किलोचा आसाम चहा हा 400 रुपये प्रति किलोच्या दार्जिलिंग चहामध्ये मिसळावा.

408 रुपये किलो दराने मिश्रण विकले जात आहे

20% नफा आहे.

वापरलेली संकल्पना:

वितरणाच्या गुणोत्तराची मूलभूत संकल्पना.

गणना :

दिलेल्या आकडेवारीवरून,

मिश्रणाची विक्री किंमत 408 रुपये प्रति किलो आहे

नफा% = (विक्री किंमत/खरेदी किंमत - 1) x 100

⇒ 20 = {(408/खरेदी किंमत) - 1} x 100

⇒ 0.2 + 1 = 408/खरेदी किंमत

⇒ मिश्रणाची किंमत = 408/1.2 = 340 रुपये प्रति किलो

∴ आसाम चहा आणि दार्जिलिंग चहा यांचे गुणोत्तर = (400 - 340) : (340 - 300) = 60 : 40 = 3 : 2

∴ गुणोत्तर 3 : 2 असावे.

408 वर 20% कमाई केली

विक्री केलेल्या खरेदी किंमत आहे,

⇒ 100/120 × 408

⇒ 340 रुपये

मिश्रण पद्धतीनुसार,

F1 Piyush.J 27-04-21 Savita D1

⇒ 60 : 40

⇒ 3 : 2

∴ गुणोत्तर 3 : 2 आहे.

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