a) ₹1025

b) ₹1055

c) ₹1125

d) ₹1155

correct answer is: c) ₹1125

**Explanation**

Here, Sum means ‘Principal’.

Simple Interest (S.I.) = ₹ 630

Time (t) = 7 years

Rate (r) = 8 % p.a.

We know,

S.I. =\frac{p\ \times\ r\ \times\ t}{100}

Or, P =\frac{S.I.\ \ \times\ 100}{r\ \times\ t} _{[interchange]}

Put the value,

P =₹\left(\frac{630\times100}{8\times7}\right)

\rightarrow P =₹ 1125

So, the principal amount is ₹ 1125 .**Ans:** The sum that would yield a simple interest of ₹630 in 7 years at an 8% per annum rate of interest is ₹1125.

**Another version of this specific question is:****(1) Calculate the principal amount required to generate a simple interest of ₹630 over a period of 7 years at an annual interest rate of 8%.****(2) Find out the initial investment needed to earn a simple interest of ₹630 in 7 years at a 8% per annum interest rate.****(3) Determine the principal sum that would yield a simple interest of ₹630 over a 7-year period at an interest rate of 8% per annum.****(4) Calculate the sum of money needed to produce a simple interest of ₹630 over a 7-year period with an annual interest rate of 8%.****(5) What is the principal amount required to accrue a simple interest of ₹630 over 7 years at a rate of 8% per annum?**