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RRB NTPC Mains or Stage 2 Model Paper 9 with solutions
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© examsnet.com
Question : 4
Total: 120
Mr. Thomas invested an amount of ₹ 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be ₹ 3508, what was the amount invested in Scheme B?
₹ 6400
₹6500
₹ 7200
₹ 7500
Validate
Solution:
(a) Let the sum invested in Scheme A be ₹ x and that in Scheme B be₹ (13900 – x).Then,
[
x
×
14
×
2
100
]
+
[
(
13900
−
x
)
×
11
×
2
100
]
=
3508
⇒
28
x
–
22
x
=
350800
–
(
13900
×
22
)
⇒
6
x
=
45000
⇒
x
=
7500.
So, sum invested in Scheme B = ₹ (13900 –7500) = ₹ 6400.
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