Answer and Explanation:
The computation of the equivalent taxable yield is shown below:
For zero = 4.50%
For 10% = 4.50 ÷ 0.90 = 5%
For 20% = 4.50 ÷ 0.80 = 5.625%
For 30% = 4.50 ÷ 0.70 = 6.43%
For 10%, for 20% and for 30% it would reduced the tax brackets by the same
like
for 10%
= 1 - 0.10
= 0.90
The Same applied for other ones
Therefore the above should be the answer