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यदि एक निश्चित धनराशि पर 2 वर्षो मे 4 % वार्षिक दर से चक्रवृद्धि ब्याज 102 है, उसी दर से 2 वर्षो का साधरण ब्याज क्या होगा |
A. Rs. 200
B. Rs. 50
C. Rs. 150
D. Rs 100

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Correct Answer - d
(d) Time (‌समय) = 2 years (‌वर्ष) ,Rate (दर) = 4%
Compound Intereset (चक्रवृद्धि ब्याज) = 102
Note:
Cl for 2 years`= R + R+ (RxxR)/(100)`
Where (‌जहाँ) ` R to` Rate of Interest (‌ब्याज की दर)
Combined Rate % of Cl for 2 years (‌ 2 ‌वर्ष के लिया % चक्रवृद्धि ब्याज ) `= 4 + 4 +(4 xx 4)/(100) =8.16%`
Sl for two years (‌2 ‌वर्ष का साधरण ब्याज) `= 2 xx 4 - 8 %`
According to the question (‌ प्रशानुसार )
Sl for two years (‌(‌2 ‌वर्ष का साधरण ब्याज) `=(102)/(8.16)xx8= Rs. 100`
Hence, reduired simple intrest (‌अभीस्ट साधरण ब्याज) = Rs. 100
Alternate
Rate (दर‌) `= 4 % = (1)/(25)`
Let Principle (‌मूलधन) `= (25)^(2) = 625` units
image
Cl for 2 years ( 2 ‌वर्ष चक्रवृद्धि ब्याज) = (25+25+1)= 51 units (यूनिट)
Sl for 2 years (2 ‌वर्ष का साधरण ब्याज) = (25+25)= 50 (यूनिट)
According to the question (प्रशानुसार )
51 units = Rs. 102
1 units = Rs.`(102)/(51) = Rs. 2`
50 units = Rs. 50 xx 2 = Rs. 100
Hence, Sl for 2 years
( 2 ‌वर्ष का साधरण ब्याज) = Rs.100

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