Question

formulate a pair of linear equations in two variables "3 pens and 4 books together cost Rs.50 whereas 5 pens and 3 books together cost Rs.54

​

Answer 1

Answer:

let number of pens be x and number of books be y

Now, according to the question,

3x + 4y = 50

5x + 3y = 54

Hope it helps

mark as brainliest

and drop a thanks mate pls

Answer 2

Answer:

Let x and y be the cost of one pencil and one pen

5 pencils and 7 pens together cost Rs. 50

⇒5x+7y=50

and 7 pencils and 5 pens together cost Rs. 46

⇒7x+5y=46