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A sum of Rs10,500 amounts to Rs13,825 in...

A sum of Rs10,500 amounts to Rs13,825 in `3 4/5` years at a certain rate per cent per annum simple interest. What will be the simple interest on the same sum for 5 years at double the earlier rate?
10,500 रुपये की एक राशि प्रति वर्ष साधारण ब्याज के एक निश्चित दर प्रतिशत पर `3 4/5` वर्षों में 13,825 रुपये हो जाती है | इसी राशि पर पहली दर से दोगुनी दर पर 5 वर्षों का साधारण ब्याज कितना होगा ?

A

Rs8,470

B

Rs8,750

C

Rs8,670

D

Rs8,560

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  18. A sum of Rs50,000 is lent partly at 4% and remaining at 5% per annum. ...

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