5. A mixture is to be made of three foods A, B, C. The three foods A, B, C contain nutrients
(P, Q, R) as (1,2,5), (3,1,1), (4,2,1) respectively. How to form a mixture which will have 8 units
of P, 5 units of Q and 7 units of R. Construct the system of equations and hence solve it using
Cramer's rule.
6. A, B and C has Tk. 480, Tk. 760 and Tk. 710 respectively. They utilized the amounts to
purchase three type of shares of price x, y and z respectively. A purchases 2 shares of price x, 5
of price y and 3 of price z; B purchases 4 shares of price x, 3 of price y and 6 of price z; C
purchases 1 shares of price x, 4 of price y and 10 of price z. Find x, y, z.
