Let us write the number of yrs. for which a principal becomes twice of its amount having the rate of simple interest of % per annum.

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 ________.

The rate of simple interest per annum reduces 4% to % and for this, Amalbabu’s annual income decreases by ₹60. Let us determine Amal babu’s principal.

What is the rate of simple interest per annum, when the interest of some money in 4 yrs. will be part of its principal-le us determine it.