Question

2 audio cassette and 3 video cassette cost for rupees 340 but 3 audio cassette and 2 video cassettes cost for rupees 260 find the price of an audio cassette and that of a video cassette

Answer 1

3x + 2y = 260
2x+3y=340
So add and subtract both to get
X+y=120
x-y=-80
So y-x=80
So y is 100 x is 20
Y represents video and x represents audio

Answer 2

Answer:

Step-by-step explanation:

Solution :-

Let the cost of audio cassette be x.

And the cost of video cassette be y.

According to the Question.

⇒ 7x + 3y = 1110 ... (i)

⇒ 5x  +4y = 1350 ...(ii)

Multiplying Eq (i) with 4 and (ii) with 3, we get

⇒ 28x + 12y  = 4440 .... (iii)

⇒ 15x + 12y = 9990 .... (iv)

Solving the Eq (iii) and (iv), we get

⇒ 13x = 390

⇒ x = 390/13

⇒ x = 30

Putting x's value in Eq (i), we get ;

⇒ 7x + 3y = 1110

⇒ y = 300

Hence, the cost of an audio cassette and a video cassette are 30 and 300.