Answer:
6.0
Explanation:
if 10 is multiplied by 1.5 it turns into 15
is 13 is multiplied by 1.5 it turns into 19.5
so the opposite must be true
when x is multiplied by 1.5 it is 9
when 9 is divided by 1.5 it is x
9 / 1.5 is 6
so x is 6
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