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