Question

A sum of money doubles itself in 5 years at a certain rate of interest. How many years will it
take for a certain sum to become 3 times itself at the same rate of interest? please answer it​

Answer 1

Answer:

hello dear here is your answer hope it helps you have a great day

Step-by-step explanation:

ANSWER

Letsum=xthenS.I=xrate=P×T100×SI=x×5100×x=20%Nowforcasesecondsum=x,SI=2xtime=x×202x×100=10years

Nowforcasesecondsum=x,SI=2xtime=x×202x×100=10years

Answer 2

Answer:

10 years

Step-by-step explanation:

Let the amount of money be x

P = x

S•I = 2x

T = 5 years

R = S•I×100

-----------

P × T

=> 2x×100

------------

x × 5

R = 40%

Now for time

P= x

S•I = 3x

R = 40%

T = S•I × 100

--------------

P × R

=> 3x ×100

------------

x × 40

=> 15

---- = 7.5 years / 7½ years.

2

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