Question

please help me ....​

Answer 1

To be honest, that is very much not appreciated that you are asking Qs with that many parts only for 5 points.

But I will tell you the formula used for this.

S.I. = P x R x T / 100

where P - principal amount

R - rate of interest per annum or per year

T- no. of years

And do convert your values into fractions from mixed fractions before calculating the answers.

Hope I helped