1. 1. 1
2. 2.
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. :- . 6 ? , ? . ,
9. 9. () () ()
10. 10. ? .50% 10 5 ?
11. 11. , ? , ?
12. 12.