Question

The cost of one pen is ₹10 and the cost of a pencil is ₹3. Find the cost of 5 pens and 3 pencils?​

Answer 1

Answer:

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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:

Cost of one pen = Rs.10

Cost of five pen = Rs.10×5

= Rs.50

Cost of one pencil = Rs.3

Cost of three pencil = Rs.3×3

= Rs.9