2) 3 3) 2.5 4) 3.5 5) 4 32. When a certain sum of money is invested for 2 years @ 10 p.c.p.a. (compound interest compounded annually), it amounts to Rs.2904. Had the rate of interest been 20%, what would have been the amount received after 2 years ? 1) Rs. 3456 2) Rs. 3624 3) Rs. 3482 4) Rs. 3260 33. In a village there are 4080 registered voters. 60% of the registered voters could 5) Rs. 3586
Answers
Answer:
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Answer:
C.I. for the third year = Rs. 1,452.
C.I. for the second year = Rs. 1,320
∴ S.I on Rs. 1,320 for one year = Rs. 1,452− Rs. 1,320= Rs. 132.
Rate of interest =
1,320
132×100
=10%.
Let the original money be Rs. P.
Amount after 2 year − amount after one year =C.I. for second year.
P(1+
100
10
)
2
−P(1+
100
10
)=1,320
P[(
100
110
)
2
−
100
110
]=1,320
⇒P[(
10
11
)
2
−
10
11
]=1,320⇒P(
100
121
−
10
11
)= Rs. 1,320
⇒P×
100
11
=Rs.1,320⇒P=
11
1,320×100
= Rs. 12,000
∴ Rate of interest =10%
and Original sum of money = Rs. 12,000
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Solution To Question ID 584820
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SIMILAR QUESTIONS
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Calculate the compound interest for the third year on Rs. 15,000 invested for 5 years at 10% per annum.
Calculate the compound interest for the third year