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RRB Paramedical Staff Nurse Model Paper 6
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© examsnet.com
Question : 50
Total: 100
Rs. 1000 is invested at 5% per annum simple interest. If the interest is added to the principal after every 10 yr, the amount will become Rs. 2000 after
15 yr
18 yr
20 yr
16(2/3) yr
Validate
Solution:
Given.
P
=
1000
,
R
=
5
%
Then,
S
I
=
1000
×
5
×
10
100
=
Rs
500
After 10 yr interest is added to the principal. Therefore,
Amount = Principal + SI
A
=
1000
+
500
=
Rs
1500
When amount is Rs 2000 the Sl will be
SI
=
Rs
(
2000
−
1500
)
=
Rs
500
Now,
S
I
=
P
×
R
×
T
100
⇒
T
=
S
I
×
100
P
×
R
=
500
×
100
1500
×
5
=
20
3
=
6
2
3
yr
Total time
=
10
+
6
2
3
16
2
3
yr
© examsnet.com
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