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RBI Assistant Mains 2017 Sitting 3 Paper
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© examsnet.com
Question : 31
Total: 100
Quantitative Aptitude
Rs. 4,800 was invested at 10 per cent per annum compound interest (compounded annually) and a certain sum was invested at 20 per cent per annum compound interest (compounded annually) .
After 2 years the total interest accrued from both the schemes was Rs. 3472. What was the sum invested at 20 per cent per annum compound interest (compound- ed annually) ?
Rs. 6000
Rs. 5800
Rs. 5600
Rs. 5200
Rs. 6400
Validate
Solution:
(3) Case I,
C.I.= P
[
(
1
+
R
100
)
T
−
1
]
= 4800
[
(
1
+
10
100
)
2
−
1
]
= RS. 1008
Casae II.
Priciple = RS. x
C.I. = x
[
(
1
+
20
100
)
2
−
1
]
= RS.
11
x
25
According to the question,
11
x
25
+
1008
=
3472
⇒ x = RS.5600
© examsnet.com
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