दरसाल 10% दराने 2 वर्षांसाठी 10,000 वरील चक्रवाढ व्याज हे सरळव्याजापेक्षा कितीने जास्त आहे:
A100
B50
C150
D200
Answer & Solution
Correct answer: A. 100
1. सरळव्याज = 10000 x 10 / 100 x 2 = 2000 आहे.
2. चक्रवाढ व्याजासाठी, पहिले वर्ष 1000 देते आणि रास 11000 होते.
3. दुसरे वर्ष 11000 चे 10 टक्के = 1100 देते, म्हणून एकूण चक्रवाढ व्याज 2100 होते.
4. यांतील फरक 2100 - 2000 = 100 आहे.
5. हे दोन वर्षांच्या प्रमाणित सूत्राशी जुळते, P x R^2 / 100^2 = 10000 x 100 / 10000 = 100.
_Source: syllabus Maths, Ch 7 'Comparing Quantities', S7.4 Compound Interest_
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