Question

20 articles cost rupees 90, the cost of
a 9 articles is :​

Answer 1

Answer:

Step-by-step explanation:

cost of 20 articles= rs.90

cost of 1 article = 90/20

=4.5

thus, cost of 9 articles = 9 x 4.5

                                    = rs 40.5

Answer 2

Answer:

articles-20

cost-90

cost of 9 articles will be:

90/20×9

9/2×9

81/2

=4.5

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