If 20 articles cost ? 90, then the cost of 9 articles is ?
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If 20 articles cost ₹ 90, then the cost of 9 articles is ?
Cost of 20 articles = ₹ 90
Cost of 1 article = ₹ 90/20
∴ Cost of 9 article = 9 x 90/20 = ₹ 40.50
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20 articles = 90 rs
1 article = 90/20
9 articles = 4.5 x 9
= 40.5
Approximately 41 rs
1 article = 90/20
9 articles = 4.5 x 9
= 40.5
Approximately 41 rs
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