500 was invested at 12% annum simple interest and another certain sum of money invested at 10% per annum simple interest. If the total interest on bot

Question

500 was invested at 12% annum simple interest and another certain sum of money invested at 10% per annum simple interest. If the total interest on bot

500 was invested at 12% annum simple interest and another certain sum of money invested at 10% per annum simple interest. If the total interest on both the sum after 4years is 480, the latter sum of money is(रु500 की एक धनराशि 12 % वार्षिक साधरण बियाज की दर से निवेशित की जाती है तथा एक अन्य धनराशि 10 % वार्षिक साधारण बियाज की दर से निवेशित की जाती है यदि 4 वर्षो बाद दोनों धनराशियो पर प्राप्त कुल बियाज 480 है, तो दूसरी धनरशि है )
A. 450
B. 750
C. 600
D. 550

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

(c ) Let the later amount =x
According to the question=`(5xx12xx4)/(100)+(x xx10xx4)/(100)=480`
`240+(4x)/(10)=240`
x=600
Hence latter amount=600
Alternate /(वैकल्पिक विधि)
Note:- In such type of question 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)
Intrest on first part (पहलेः विभाग पर) = `(500xx12xx4)/(100)= ₹ 240`
Remaining interest(शेष बियाज)
= ₹ (480 - 240)
= ₹ 240
Hence Required some of money(अभीस्ट राशि)
`240/((4xx10))xx100 = ₹ 600`