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s2008m [1.1K]
3 years ago
5

If 20 articles cost ? 90, then the cost of 9 articles is ?

Mathematics
1 answer:
lianna [129]3 years ago
6 0

Answer:

40.50

Step-by-step explanation:

90/20 = 4.50

4.50 x 9 = 40.50

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