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A person deposited 500 for 4 years and 6...

A person deposited 500 for 4 years and 600 for 3 years at the same rate of simple interest in a bank. Altogeher he received 190 as interest . The rate of simple interest per annum was:(एक आदमी एक बैंक में सामान साधारण बियाज की दर से 4 वर्ष के लिए रु 5000 की राशि पर 12 % की दर से 2 वर्षो के साधरण बियाज के बराबर है| क्ष का मान बताए)

A

0.04

B

0.05

C

0.02

D

0.03

लिखित उत्तर

Verified by Experts

(b) Let the Rate of interest(माना की बियाज दर)=R%
According to the question(प्रशानुसार) `(500xx4xxR)/(100)+(600xx3xxR)/(100)=190`
20R+18R=190
38R=190 R=5%
Hence, Required Rate(अभीस्ट बियाज )=5%
Alternate(वैकल्पिक विधि)
Note:In such type of questions to save your valuable time follow the given below method(इस प्रकार के प्रशनो बहुमूल्य समय के बचत के लिए आप नीचे दी गयी विधि का प्रयोग कर सकते है )
Let Rate of interest=1%
Case (I) Interest`(I_(1))=(500xx4xx1)/(100)=20`
Case(II) Interest`(I_(2)) =(600xx3xx1)/(100)=18`
According to the question

Hence required Rate%=5%
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