Bar co dec 2011

1) Sir in bar co question it is written that right issue will be at 20% discount to its current ex dividend share price of $7.5 per share and bar co plans to raise $90m. Existing ordinary shares nominal value was $1 per share.

Here the nominal value of right issue per share will be $1 or $6 (i.e 7.5*0.8)?

2) In part b examiner did :
Nominal value of bonds redeemed = 90m x (100/112·50) = $80 million
Interest saved by redeeming bonds = 80m x 0·08 = $6·4 million per year
Revised profit before tax = 49m – (10m – 6·4m) = $45·4 million
Revised profit after tax (earnings) = 45·4m x 0·7 = $31·78 million

If instead of this we calculate Revised PAT in another way i.e

Nominal value of bonds redeemed = 90m x (100/112·50) = $80 million
Before tax Interest saved by redeeming bonds = 80m x 0·08 = $6·4 million per year
After tax interest saved by redeeming bonds = 6·4m x (1-0.3) = $4.48 million per year
Revised PAT = 27m + 4.48m = $31.48m

Would this be fine? But minor difference of $0.3m is coming in Revised PAT, I cannot figure out why this difference is coming, can you please help me?