Question

Find the principal if Interest=Rs. 810, Time=4.5 years and Rate=9% per year

Answer 1

Step-by-step explanation:

principal=si×100/t×r

=810×100/4.5×9

=81000/40.5

=2,000rs

Answer 2

Answer :

Given :

• Interest = Rs 810

• Time = 4.5 yrs

• Rate = 9 % p.a.

To Find :

• Principal

Solution :

$\bold{\boxed{\sf{\red{Simple\: Interest\: = \: \dfrac{P \times R \times T}{100}}}}}$

$\leadsto \bf Principle \:=\: \dfrac{I \times 100}{R \times T}$

$\leadsto \bf Principle \:=\: \dfrac{810 \times 100}{9 \times 4.5}$

$\leadsto \bf Principle \:=\: \dfrac{81, 000}{40.5}$

$\leadsto \bf Principle \:=\: 2,000$

• Principle = Rs. 2000

_________________________