MBSB

MBSB除權之前的最后交易價是2.55令吉

{(7 x 2.55) + (5 x 1.00)} + (5 x 1.00)} / 17 = 1.64

total investment value (TIV) = {(7 x 2.55) + (5 x 1.00)} = 22.85

as at 20th June 2011

mum current price = 1.41

son current price = 0.705

current total investment value = {(12 x 1.41) + (5 x 0.705)} = 20.45

deducting additional cost to purchase right issue, 

mom current price = {20.45 - (5 x 1.00)} / 7 = 2.21

in order for  mum to retrace back to 1.80,

mom should price at 

{TIV - (5 x 1.00)} /7 = 1.80

TIV = (1.80 x 7) + 5 = 17.60

{(12 x a) + (5 x 0.5a)} =17.60

a = 17.60/14.5 = 1.21