Question

the difference between the compound interest and simple interest for 2yearsat 10%per annum is 120.find the principal ​

Answer 1

Here D=120,r=10%

Principal=D×(100)²/r²

=120×(100)²/10²

=12000( kindly remember that it will be applicable only at the time of attending mcq based questions in compitative exam for time saving)