Form 4 Mathematics
(b) Okello bought 5 Physics books and 6 Mathematics books for a total of Ksh 2 440.
Ali bought 7 Physics books and 9 Mathematics books for a total of Ksh 3 560.
(i) Form a matrix equation to represent the above information.
(ii) Use matrix method to find the price of a Physics book and that of a Mathematics book.
(c) A school bought 36 Physics books and 50 Mathematics books. A discount of 5% was allowed on each Physics book whereas a discount of 8% was allowed on each Mathematics book.
Calculate the percentage discount on the cost of all the books bought.
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