Asha invests rs 8000 at a certain rate for three yrs compounded annually. She finds at the end of the first year it amounts to rs 9200. Calculate (1) R% (2) interest acquired in second year (3) amount at the end of the third year

= 12169 rs

Step-by-step explanation:

Asha invest total=rs 8000

Total years = 3

Amount after 1 year = 9200 rs

Interest on first year = 9200-8000 = 1200 rs

So for second and third years

A = P (1 + R/100) ⁿ

9200 = 8000 (1 + R/100) ¹

9200 = 8000 (100 + R/100)

115 = 100 + R

R = 15

So amount after second year

A = 8000 (1 + 15/100) ²

A = 10580

Interest on second is = 10580 - P-interest on ist

=10580-8000-1200

= 1380 rs

So total amount at the end

A = 8000 (1 + 15/100) ³

=12169 rs