1. 1. 1
2. 2.
3. 3.
4. 4.
5. 5. , (Simple Profit)
6. 6. = P (principal) = r (rateof interest) = n (time) = I (profit) - = A (Totalamount)
7. 7. (i) I = Pnr (ii) A = P + I (iii) A = P + Pnr (iv) A = P ( 1 + nr ) = - = + - = + - = +
8. 8. 1 : I = Pnr 2 - - : A=P+I : C=P(1+r)n 4 : P(1+r)n-P
9. 9. :- . % , ? 5
10. 10. , ?
11. 11. ? - .%
12. 12. , ? %
13. 13.