45
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46.530 increased by 55%=30 + (55% * 30)=30 + (0.55 * 30)=30 + 16.5= 46.5
15 increased by two times a number x
One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.
It is: 24+6 = 30
No, 30 is a multiple of 15.