The total interest of a principal in n yrs. at the rate of simple interest of r% per annum in , the principal will be

If a principal becomes twice of its amount in 10 yrs, the rate of simple interest per annum is

If the total interest becomes ₹ x for any principal having the rate of simple interest of x% per annum for x years then the principal will be

Let us write, whether the following statements are true or false:

(i) A man takes a loan is called debtor

(ii) If the principal and the rate of simple interest in percent per annum be constants, then the total interest and the time are inverse relation.

Let us fill in the blanks:

(i) A man who gives a loan is called___________.

(ii) The amount of ₹2p in t yrs. at the rate of simple interest of % per annum is ₹(2p + ________).

(iii) The ratio of the principal and the amount (principal along with interest) in 1 yr. is8:9, the rate of simple interest per annum is ________.