THE HONGKONG GOVERNMENT GAZETTE, OCT. 26, 1906. 1871
NOTE.It will be observed that this method takes account of the actual number of years for which the annual contribution will run. In Example (1), when the Officer receives the increment of salary at age 22 he has contributed to the Fund for five years, so that at the expiration of 30 years his contributions will cease. Similarly in Example (2), when the Officer marries at age 24, he also has contributed to the Fund for five years, so that although he is two years older than the Officer in Example (1), yet the unexpired period of contri- bution is the same in each ease, and the wife's age is in each instance 20, so that no important error is involved in using the same tabular quantity for the
two cases.
TABLE C.-The quantities are given for the same ages as in Table A. Ages of husbands and wives below and beyond are to be treated as in using that Table.
For the intermediate ages of wives interpolate by first differences as explained above, except that it must be noted that in this Table an addition to the age of the wife results in a deduction from the quantity given in the Table.
To find the quantity corresponding to the ages of a husband and wife aged respectively 35 and 27 next birthday.
The quantity for ages 35 and 25 given in
the Table is
3.224
The quantity for ages 35 and 30 given in
the Table is
3.010
So that the addition of five years to the age of the wife results in a deduction of 214 from the quantity given in the Table for ages 35 and 25.
An addition of two years to the age of the wife necord- ingly results by proportion in a deduction of two- fifths of .214 from the quantity given in the Table for ages 35 and 25.
Two-fifths of .214.086, which deducted from 3.224 leaves 3.138, which is the required quantity cor- responding to ages 35 and 27.