Question

5. A notebook costs 20 more than a pen. If the cost of 5 pens & 4 notebooks is 125, find the cost of 1 pen.​

Answer 1

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Given total cost of 5 pens and 10 pencil = Rs 30

5 pens + 10 pencils = 30

pens + 2 pencils = 1

also given pen cost 3 more than a pencil

i.e, pen = 3 + pencil.

pen - pencil = 3

pens + 2 pencils = 6

_______________

-3 pencils = -3

pencils = 1

pen - 1 = 3

pen = 4

cost of pencils = 1 cost of pen = 4

Answer 2

Answer:

y = Rs. 2.78

Step-by-step explanation:

continue from picture

9y = 25

y = 25/9

y = Rs. 2.78