Question

9. At what rate of interest, a certain sum of money will become triple (three times itself) in 8 years? Find in how many years, will the same sum become double of itself at the same rate of interest per annum?​

Answer 1

Step-by-step explanation:

Correct option is D)

Simple Interest I=

100

PNR

Amount A=2P

I=A−P=2P−P=P

N=8 years

So, P=

100

P×8×R

⇒R=12.5 %

Now, we need to find N when A=3P

⇒I=3P−P=2P

So, 2P=

100

P×N×12.5

⇒N=16 years

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Answer 2

Answer:

so I can halp you have thise and answers are not have thise and answers are not have

Step-by-step explanation:

so I can halp you have thise and answers are not have thise and answers are not have