There is a 12.5% increase from 40 to 45.
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4.4% increase.
To increase 45 by 20 percent, you first calculate 20 percent of 45 by multiplying 45 by 0.20, which equals 9. Then, you add this result to the original number: 45 + 9 = 54. Therefore, increasing 45 by 20 percent results in 54.
40 to 66 = 65 % increase.
45 dollars plus a 7 percent increase gives a new value of $48.15
25% increase