Question

find the compound interest on Rs 800 at 5% per annum for 2 years ?

Answer 1

Compound interest on Rs.800 for 2 years at 5% per annum is Rs. 82/-.

Solution:

C.A = p [1 + (r / 100)]^n

C.A = 800[1 + (5 / 100)]^2

= 800 * (105 / 100) * 105 / 100

C.A = 882

C.I = C.A - Principal

= 882 - 800

= 82

Hence compound interest on Rs.800 for 2 years at 5% per annum is Rs.82/-.

Answer 2

For 1st year:
P = 800
R = 5%
T = 1 year
I = 800 × 5 × 1 / 100 = 40
Amount = P + I = 800 + 40 = 840
For 2nd year:
P = 840
R = 5%
T = 1year
I = 840 × 5 × 1 / 100 = 42
A = P + I = 840 + 42 = 882
Compound Interest = final amount - original principal
= 882 - 800 = 82answer..


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