Question

Zaid, Hamza and Talha purchased biscuits of different brands P, Q and R. Zaid purchased 10 packets of P, 7 packets of Q and 3 packets of R. Hamza purchased 4 pockets of P, 8 packets of Q and 10 packets of R. Talha purchased 4 packets of P, 7 packets of Q and 8 packets of R. If brand P costs Rs.4, Q costs Rs.5 and R costs Rs.6 each, then using matrix operation, the amount of money spent by these persons individually are: ?​

Answer 1

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