Question

Q.8 What principal will amount to Rs 16240 in 4 years at 4%
per annum simple interest?​

Answer 1

Answer:

Time = 4 years

Rate of interest = 4%

Let the principal be x

Amount = Rs.16240

Simple interest = Amount - Principal = 16240-x

Formula : SI = \frac{P \times T \times R}{100}SI=

100

P×T×R

Si = Simple interest

P =Principal

T = time

R = rate of interest

Substitute the values in the formula :

\begin{gathered}16240-x = \frac{x \times 4 \times 4}{100}\\100(16240-x)=16x\\1624000-100x=16x\\1624000=116x\\\frac{1624000}{116}=x\\14000=x\end{gathered}

16240−x=

100

x×4×4

100(16240−x)=16x

1624000−100x=16x

1624000=116x

116

1624000

=x

14000=x

Hence The principal is Rs.14000

Answer 2

Answer:

101500 this is answer from my side