यदि दो गुणवत्ता वाली दालें 'X' और 'Y', जिनका मूल्य 100 रुपये और 150 रुपये प्रति किग्रा है, को 7 ∶ 20 के अनुपात में मिलाया जाता है, तो दालों के इस मिश्रण का मूल्य (रुपये में) कितना है? (निकटतम पूर्णांक रुपये में)

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SSC CGL 2023 Tier-I Official Paper (Held On: 18 Jul 2023 Shift 2)
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  1. 137
  2. 135
  3. 134
  4. 136

Answer (Detailed Solution Below)

Option 1 : 137
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PYST 1: SSC CGL - English (Held On : 11 April 2022 Shift 1)
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25 Questions 50 Marks 12 Mins

Detailed Solution

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दिया गया है:

X गुणवत्ता वाली दालों का मूल्य = 100 रुपये/किग्रा

Y गुणवत्ता वाली दालों का मूल्य = 150रुपये/किग्रा

X प्रकार की दालों की मात्रा : Y प्रकार की दालों की मात्रा = 7 : 20

प्रयुक्त सूत्र:

औसत मूल्य = (दो गुणवत्ता वाले अनाज के मिश्रण का कुल मूल्य)/कुल मात्रा

गणना:

माना कि, X प्रकार की दालों की मात्रा = 7x 

Y प्रकार की दालों की मात्रा = 20x

औसत मूल्य = (दो गुणवत्ता वाले अनाज के मिश्रण का कुल मूल्य)/कुल मात्रा

⇒ {(100 × 7x) + (150 × 20x)}/27x

⇒ (700x + 3000x)/27x

⇒ 3700x/27x = 137.03 रुपये ≈ 137 रुपये

∴ सही उत्तर 137 रुपये है।

Shortcut Trick F2 State G Arbaz 5-3-24 D1

⇒ 3000 - 20m = 7m - 700

⇒ 3700 = 27m

⇒ m = 3700/27 

 ⇒ m =Rs.137.03 ≈ Rs.137

∴ The correct answer is Rs.137.

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