AshimweAnge AshimweAnge

15-11-2022
Mathematics

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7. How many pairs of positive integers (x,y) have the property that the ratio x:4 equals the ratio
9:y?
For example the pair (1,36) works as 1:4 equals 9:36.
(A)6 (B)7 (C)8 (D)9 (E)10

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