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