Question

A person bought 6 rupees worth of orange from five markets at
15 p., 20 p., 25 p., 30 p. and 50 p. per orange respectively. What is the average price
of an orange?
What would be the average price, if he had purchased 20 oranges from each market?
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Answer 1

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