Question

*In how many years Rs. 6000 will amount to Rs 7986 at a compound interest rate of 10 %?*

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Answer 1

Answer:

3 years

Step-by-step explanation:

Given,

P=Rs.6000

r=10% p.a.

A=Rs.7986

Let, the time be n years.

So,

=>A=P×(1+(r/100))^n

=>7986=6000×(1+(10/100))^n

=>7986/6000=(11/10)^n

Reducing LHS by 6,

=>(1331/1000)=(11/10)^n

=>(11/10)^3=(11/10)^n

Taking (11/10) as common on either sides,

Therefore, n=3 years

Answer 2

After 3yrs3months24days.

Step-by-step explanation:

At 10% its yearly interest is 600

7986-6000=1986

600×3=1800

1986-1800=186

its monthly interest will be 50

50×3.72=186.

I am sorry, I had not done this qn by formula.