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Three shopkeepers Gaurav, Rizwan and Jacob use carry bags made of polythene, handmade paper and…
Three shopkeepers Gaurav, Rizwan and Jacob use carry bags made of polythene, handmade paper and newspaper. The number of polythene bags, handmade bags and newspaper bags used by Gaurav, Rizwan and Jacob are $(20, 30, 40)$, $(30, 40, 20)$ and $(40, 20, 30)$ respectively. One polythene bag costs ₹1, one handmade bag is for ₹5 and one newspaper bag costs ₹2. Gaurav, Rizwan and Jacob spend ₹ A, ₹ B and ₹ C respectively on these carry bags.
Using the concepts of matrices and determinants, answer the following questions:
(i)[1.0]
Represent the above information in Matrix form.
(ii)[1.0]
Find the values of ₹ A, ₹ B and ₹ C.
Answer
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From ISC 2025 Mathematics Paper 1, question 5.