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IBPS PO Prelims Model Paper 11
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© examsnet.com
Question : 65
Total: 100
A invests a certain sum in scheme A at compound interest (compounded annually) of 10% per annum for 2 years. In scheme B he invests at simple interest of 8% per annum for 2 years. He invests in schemes A and B in the ratio of 1 : 2. The difference between the interests earned from both the schemes is Rs. 990. Find the amount invested in scheme A.
Rs. 7500
Rs. 8000
Rs. 9000
Rs. 8500
Rs. 8600
Validate
Solution:
Investment in scheme A = Rs. x
Investment in scheme B = Rs. 2x
According to the question,
P
2
×
r
×
T
100
−
P
1
[
(
1
+
R
100
)
T
−
1
]
=
990
⇒
2
x
×
8
×
2
100
−
x
[
(
1
+
10
100
)
2
−
1
]
=
990
⇒
32
x
100
−
21
x
100
=
990
⇒
x
=
Rs
.
9000
© examsnet.com
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