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IBPS Clerk Prelims Model Paper 14
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© examsnet.com
Question : 40
Total: 100
A certain sum in certain time become ₹ 5000 at the rate 12% per annum SI and the same sum amounts to ₹ 2000 at the rate of 4% per annum SI in the same duration. Find the sum and time.
400 ₹ 60 yr
300 ₹ 75 yr
800 ₹ 55 yr
500 ₹ 75 yr
None of these
Validate
Solution:
As per the question,
A
1
–
A
2
= 5000 – 2000
(
P
+
P
×
12
×
T
100
)
−
(
P
+
P
+
4
×
T
100
)
= 5000 – 2000
⇒
8
P
T
100
= 300
⇒ PT =
3000
×
100
8
= 37500
Again, for 12% rate,
SI =
P
T
R
100
=
37500
×
12
100
⇒ SI = ₹ 4500
Then Sum (P) = 5000 – 4500 = ₹ 500
We have, PT = 37500
∴ T =
37500
P
=
37500
500
= 75 year
© examsnet.com
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