A child’s benefit effective upon death of an employee occurring on or after July 1, 1983 shall be $100 per month, if a parent survives; or $150 per month if no parent survives, or upon the death of the surviving parent; provided that the combined benefits to a widow and children, or for children only if there is no widow, shall not exceed 60% of final salary in any case where the employee’s death resulted from any cause other than an act of duty, or 75% of such salary if death was the result of an act of duty. Where such limitations are exceeded, the benefits to the widow and children shall be reduced pro rata to conform to the applicable limitation.
     If a parent survives, the child’s benefit shall be paid to the parent if the parent is providing support for the child, unless another person has been appointed by a court as the guardian of the child. If no parent survives, or if a surviving parent is not providing support for the child, the child’s benefit shall be paid to the legally appointed guardian.