Question

answer for this 11th sum a,b.briefly

Answer 1

Step-by-step explanation:

(a)

Given P = 1000, R = 5%, Time = 3 years.

∴ A = P(1 + r/100)ⁿ

     = 1000(1 + 5/100)³

     = 1000(1 + 1/20)³

     = 1000(21/20)³

     = 1157.625.

∴ CI = A - P

      = 1157.625 - 1000

      = 157.625.

Therefore, Amount = 1157.625 and CI = 157.625.

(b)

Given, P =  360, R = 20%, Time = 2 years.

∴ A = P(1 + r/100)ⁿ

      = 360(1 + 20/100)²

      = 360(6/5)²

      = 360(36/25)

      = 12960/25

      = 518.4.

∴ CI = A - P

       = 518.4 - 360

       = 158.4.

Therefore, Amount = 518.4 and CI = 158.4.

Hope it helps!

Answer 2

Answer:

Step-by-step explanation:

1. P = 1000, R = 5%, n = 3 years.

A = P(1 + r/100)^n

   = 1000(1 + 5/100)^3

   = 1157.625.

CI = A - P  

   = 157.625.

2. P = 360, R = 20%, n = 2 years.

A = P(1 + r/100)^n

   = 360(1 + 20/100)^2

   = 518.4

CI = A - P

   = 158.4