Question

7 audio cassettes and 3 videocassettes cost Rs 1110, while 5 audio cassettes and 4 videocassettes cost Rs 1350. Find the cost of an audio cassette

Answer 1

let audio casset.. be x and video cass.. be y
7x+ 3y = 1110.........(1)
5x + 4y = 1350 .........(2)
solve equation 1&2