Examsnet
Unconfined exams practice
Home
Exams
Banking Entrance Exams
CUET Exam Papers
Defence Exams
Engineering Exams
Finance Entrance Exams
GATE Exam Practice
Insurance Exams
International Exams
JEE Exams
LAW Entrance Exams
MBA Entrance Exams
MCA Entrance Exams
Medical Entrance Exams
Other Entrance Exams
Police Exams
Public Service Commission (PSC)
RRB Entrance Exams
SSC Exams
State Govt Exams
Subjectwise Practice
Teacher Exams
SET Exams(State Eligibility Test)
UPSC Entrance Exams
Aptitude
Algebra and Higher Mathematics
Arithmetic
Commercial Mathematics
Data Based Mathematics
Geometry and Mensuration
Number System and Numeracy
Problem Solving
Board Exams
Andhra
Bihar
CBSE
Gujarat
Haryana
ICSE
Jammu and Kashmir
Karnataka
Kerala
Madhya Pradesh
Maharashtra
Odisha
Tamil Nadu
Telangana
Uttar Pradesh
English
Competitive English
Certifications
Technical
Cloud Tech Certifications
Security Tech Certifications
Management
IT Infrastructure
More
About
Careers
Contact Us
Our Apps
Privacy
Test Index
IBPS RRB Office Assistant 23 Sep 2017 Paper
Show Para
Hide Para
Share question:
© examsnet.com
Question : 47
Total: 80
A total of Rs. 800 was invested in two schemes- A and B- for 2 years each. Schemes A and B offer compound interest at the rate of 10% p.a. and 20% p.a. respectively, both compounded annually. If the total interest earned from both schemes together was Rs. 260, what was the sum invested in scheme B ?
Rs. 270
Rs. 400
Rs. 375
Rs. 325
Rs. 425
Validate
Solution:
(2) Investment in scheme B= Rs.x
∴ Investment in scheme A= Rs.(800 – x)
According to the question
x
[
(
1
+
20
100
)
2
−
1
]
+
(
800
−
x
)
[
(
1
+
10
100
)
2
−
1
]
=
260
⇒
x
[
(
6
5
)
2
−
1
]
+
(
800
−
x
)
[
(
11
10
)
2
−
1
]
=
260
⇒
x
(
36
−
25
25
)
+
(
800
−
x
)
(
121
−
100
100
)
=
260
⇒
11
x
25
+
800
×
21
100
−
21
x
100
=
260
⇒
11
x
25
−
21
x
100
=
260
−
168
⇒
44
x
−
21
x
100
=
92
⇒
23
x
=
9200
⇒
x
=
9200
23
=
R
s
.400
© examsnet.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Prev Question
Next Question
Examsnet