99.—(1) Except as provided in regulation 98 (child pensions: short-term rate), the annual rate of a child pension is R x the average salary of the person (D) on whose death the pension is payable x D's family benefit service (in years and fractions of a year)/EC.
(2) R is—
(a)while an adult pension is payable in respect of D, 1/160;
(b)where no adult pension becomes payable on D's death or where such a pension became payable on D's death but ceases to be payable, 1/120.
(3) EC is—
(a)2 while the number of D's eligible children to whom a child pension is payable is 1 or 2, and
(b)the number of D's eligible children to whom a child pension is payable in any other case.
(4) Part 2 of Schedule 9 (family benefit service) has effect for determining D's family benefit service.