Siksha invested half of his money on 10 p a S I for 3 years and another half at 15 p a C I for 3 yea...........

Quantitative Aptitude (Insurance) Compound Interest

Siksha invested half of his money on 10% p.a. S.I. for 3 years and another half at 15% p.a. C.I for 3 years. If Siksha obtained Rs. 1440 more in C.I. than S.I. then find money invested by her in SI.

Rs. 50,000

Rs. 80,000

Rs. 54,000

Rs. 40,000

Rs. 64,000

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Explanation:

Let principal be Rs. 400?? in SI and ???? 400?? in C.I. ATQ, 400?? [(1 + 15/100) 2 – 1] – ( 400??×3×10/100 ) = 1440 400?? × 129 /00 – 120?? = 1440 ?? = 160 So, money invested in SI = 160 × 400 = Rs. 64,000