Question

Principal = Rs.40000, rate = 7%, time = 2 years, then C.I
=

Answer 1

a) We shall use the formula, for compound interest, A= P(1 + R/100)ⁿ

Given, Principal P = Rs 40000

Rate R = 7%

Amount = 40000(1+7/100)¹

  = 40000 x 108/100

  = Rs 43200

Compound interest = Amount - Principal

=  43200- 40000 = Rs 3200

b) Amount for 1st year becomes principal for second year

  Principal for second year = Rs 43200

c)  Amount for 2nd year  =  P(1 + R/100)ⁿ

      =  43200(1 + 8/100)¹

     =  43200 x 108/100

     =   Rs 46656

 Compound interest  =  Amount - Principal

   = 46656 - 43200  =  Rs 3456

d)  For period of two years, we have already calculated amount to be Rs 46656

I hope it helped

Pls mark as the brainliest answer

Answer 2

40000(1+7/100)^2

40000(107/100)^2

40000 x 107/100 x 107/100

40000 x 1.07 x 1.07

45,796 Rs.