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  1. 0.6 of a number equals 0.09 of another number. The ratio of the number is ?
    1. 2 : 3
    2. 1 : 15
    3. 20 : 3
    4. 3 : 20
Correct Option: D

0.6 x a = 0.09 x b
∴ a/b = 0.09 / 0.06 = 9 / 60 = 3 / 20 = 3 : 20


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