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This is a difference of two square, so you can apply the factoring rule for the difference of two squares.
There is no general conversion, since they measure different things (volume versus mass). You need to know the density of a specific material to do the conversion for that material, and apply the formula: mass = volume x density
Apply the formula of percent increase,which is : new value - old value / old value so, your question is what percent increase is 12 to 18, here 18 is the new value and 12 is the old value, now apply to the formula: percent increase= 18-12 / 12 = 0.5 now to get the percent multiply by 100 , 0.5*100 = 50% So, the percent increase 12 to 18 is 50%.
To calculate income tax, one should sum up the totals of all the taxable income and subtract from it the personal allowance and any other tax free allowances. After that, one should apply the rate of tax on the resultant value to find out the income tax payable.
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