Question

A sum of money at simple interest triples itself in 10 years in how much time will it be 5 times of itself​

Answer 1

Answer:

10 years.

Step-by-step explanation:

Let a sum of money is Rs.x which triples itself in 5 yrs at r% p.a. at simple interest

Let in n years it becomes 5 times. Accordingly :-

P =Rs.x , t=5 years. , A=Rs.3x. , S.I.= Rs.(3x-x)= Rs.2x.

S.I. = (P×r×t)/100.

2x = ( x.r.5)/100

or , 2 = r/20. => r = 40%

Now , P=Rs.x , r =40%. , t= n years. A= Rs.5x. , S.I. = Rs.(5x-x)= Rs.4x.

4x = (x.40.n)/100.

or , 1 = n/10. => n = 10 years.

Answer 2

Answer:

10 years mark me as a brainliest answer