(i) 7 Audio cassettes and 3 Video cassettes cost is 1110.
(ii) 5 Audio cassettes and 4 Video cassettes cost Rs. 1350.
To Find: Cost of 1 audio cassette and 1 video cassettes.
Let (i) the cost of 1 audio cassette = Rs. x.
(ii) the cost of 1 video cassette = Rs. y.
According to the given conditions, we have
Thus, we get the following system of linear equation,
By using cross multiplication, we have
Hence cost of 1 audio cassette =
Hence cost of 1 video cassette =