[Commutation of annuity.

90. Any payment in commutation of annuity shall not exceed—

(a)		in a case where the employee receives any gratuity, the commuted value of [one-third] of the annuity which he is normally entitled to receive, and
(b)		in any other case, the commuted value of [one-half] of such annuity,

such commuted value being determined having regard to the age of the recipient, the state of his health, the rate of interest and officially recognised tables of mortality.]