Question

25. A sum of money invested at 6% p.a. simple interest for a certain period of time yields 960 as
interest. If this sum had been invested for 5 years more, it would have yielded * 2160 as interest.
Find the sum.
​

Answer 1

Answer:

4000

Step-by-step explanation:

According to the problem,

Let sum be P

R=6%

Time=Tyears

S.I=

100

P×6×T

S.I=Rs960

100

P×6×T

=960

P×T=16000----------------(1)

Now For sum

Sum=RsP,R=6%,T=5years

S.I=

100

P×6×(T+5)

=2160

100

P×6×T

+

100

P×6×5

=2160

100

16000×6

+

100

P×30

=2160

100

P×30

=2160−960

100

P×30

=1200

P=

30

1200×100

=Rs.4000

Therefore the Sum is Rs, 4000.

Answer 2

Step-by-step explanation:

50 saum of manlyinvaitedet.6% samdal semply 100 .ift they been for 10 yeiar 10000 feetthe the saum