Question
Download Solution PDF'X' आणि 'Y' दोन प्रकारच्या डाळी अनुक्रमे 100 रुपये आणि 150 रुपये प्रति किलोच्या किमती असलेल्या 7 ∶ 20 या प्रमाणात मिसळल्या तर या डाळीच्या मिश्रणाची किंमत (रुपयामध्ये) किती असेल (जवळच्या रुपयाच्या बरोबर)?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे:
X प्रकारच्या डाळीची किंमत = 100 रुपये/किलो
Y प्रकारच्या डाळीची किंमत = 150 रुपये/किलो
X प्रकारच्या डाळीचे प्रमाण : Y प्रकारच्या डाळीचे प्रमाण = 7 : 20
वापरलेले सूत्र :
सरासरी किंमत = (दोन प्रकारच्या डाळीच्या मिश्रणाची एकूण किंमत)/एकूण प्रमाण
गणना :
समजा X प्रकारच्या डाळीचे प्रमाण = 7x आहे
X प्रकारच्या डाळीचे प्रमाण = 20x
सरासरी किंमत = (दोन प्रकारच्या डाळीच्या मिश्रणाची एकूण किंमत)/एकूण प्रमाण
⇒ {(100 × 7x) + (150 × 20x)}/27x
⇒ (700x + 3000x)/27x
⇒ 3700x/27x = 137.03 रुपये ≈ 137 रुपये
∴ योग्य उत्तर 137 रुपये आहे.
Shortcut Trick
\(\frac{150-m}{m-100}= \frac{7}{20}\)
⇒ 3000 - 20m = 7m - 700
⇒ 3700 = 27m
⇒ m = 3700/27
⇒ m =137.03 रुपये ≈ 137 रुपये
∴ 137 रुपये हे योग्य उत्तर आहे.
Last updated on Jun 13, 2025
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