Question

the cost of a pen is rupees 2 X + 3 the cost of a pencil is y-3 find the cost of 5 pens and 3 pencils together

Answer 1

1 pen = Rs (2x + 3)

1 pencil = Rs (y - 3)

Find the cost of 5 pens and 3 pencils:

5 pens + 3 pencils = 5(2x + 3) + 3(y - 3)

5 pens + 3 pencils = 10x + 15 + 3y - 9

5 pens + 3 pencils = 10x + 3y + 6

Answer: 10x + 3y + 6

Answer 2

Given :

Cost of a pen is 2x + 3

Cost of a pencil is y - 3.

Finding the cost of 5 pens and 3 pencils together -

Cost of 5 pens and 3 pencils is -

5(2x +3) + 3(y - 3)

10x + 15 + 3y - 9

10x + 3y + 6.


Hence : Cost of 5 pens and 3 pencils = 10x + 3y + 6.


$\bold{Answer: Rs \: (10x + 3y + 6)}$