Question

14. At a certain rate of simple interest a certain sum doubles itself in 4 years .In how
many years it will triple itself.​

Answer 1

Answer:

So, Amount = Sum + Interest

Step-by-step explanation:

Answer 2

Answer:

8years

Step-by-step explanation:

doubles itself means

SI=1

P=1

therefore r=25%

triple means

SI=2

P=1

& r=25%

therefore

SI=p×r×t/100

2p=p×25×t/100

t=8years