Amit invests a sum of ₹5400 and Gopal
Amit invests a sum of ₹5400 and Gopal invests a sum of ₹9400 at the same rate of simple interest per annum. If, at the end of 3 years, Gopal gets ₹840 more interest than Amit, then find the rate of interest per annum (in percentage).
वार्षिक साधारण ब्याज की समान दर पर अमित ₹ 5400 की राशि का निवेश करता है और गोपाल ₹ 9400 की राशि का निवेश करता है। यदि 3 वर्ष के अंत में गोपाल को अमित से ₹ 840 अधिक ब्याज प्राप्त होता है,तो वार्षिक ब्याज की दर (प्रतिशत में) ज्ञात कीजिए।
Detailed Solution & Logic
7
Given: Amit = ₹5400 Gopal = ₹9400 Time = 3 years Difference in SI = ₹840
Step 1: Difference in SI formula
Difference = 9400 - 5400 $ \times r \times 3 / 100 $
$ 840 = 4000 \times r \times 3 / 100 $
840 = 120r
r = 7%
Rate of interest = 7% per annum
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