कणिकमध्ये साखरेचे पिठाशी प्रारंभिक गुणोत्तर 2 : 7 होते.  9 किलो कणिकमध्ये, जॉनने आणखी साखर घातली ज्यामुळे साखरेचे पिठाशी गुणोत्तर 2 : 5 झाले. तर नंतर जॉनने किती साखर घातली?

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RRB ALP Previous Paper 7 (Held On: 13 Aug 2018 Shift 2)
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  1. 750 ग्रॅम
  2. 1.2 किलो
  3. 1 किलो
  4. 800 ग्रॅम

Answer (Detailed Solution Below)

Option 4 : 800 ग्रॅम
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दिलेले आहे:

कणिकमध्ये साखरेचे पिठाशी प्रारंभिक गुणोत्तर 2 : 7 होते.

9 किलो कणिकमध्ये, जॉनने आणखी साखर घातली ज्यामुळे साखरेचे पिठाशी गुणोत्तर 2 : 5 झाले

वापरलेली संकल्पना:

मिश्रणातील प्रमाणाच्या बेरीज आणि वजाबाकीची मूलभूत संकल्पना.

गणना :

कणिकमध्ये साखरेचे पिठाशी प्रारंभिक गुणोत्तर = 2 : 7 आणि प्रारंभिक कणिकचे प्रमाण = 9 किलो

समजा साखरेचे प्रारंभिक प्रमाण 2x आणि पीठाचे प्रारंभिक प्रमाण 7x आहे

⇒ 2x + 7x = 9

⇒ x = 1

⇒ साखरेचे प्रारंभिक प्रमाण = 2 किलो

⇒ पिठाचे प्रारंभिक प्रमाण = 7 किलो

साखर घातल्यानंतर कणिकमध्ये साखरेचे पिठाशी गुणोत्तर 2 : 5 होते

जॉनने कणिकमध्ये 'y' किलो साखर घातली

⇒ (2 + y)/7 = 2/5

⇒ 10 + 5y = 14

⇒ y = 0.8 किलो

⇒ 800 ग्रॅम

नंतर जॉनने 800 ग्रॅम साखर घातली

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