The premium, now $78.20 a month, is calculated according to a complex formula set by law.

Under the bill, states that want Federal grants would have to contribute money according to a formula set by Congress.

Premiums charged to the elderly and the amounts paid to doctors are computed according to complex formulas set by law.

Using a formula set by District 4, the school has drawn 80 percent of its students from the neighborhood, which is predominantly black and Hispanic.

Formula grants, on the other hand, are distributed based on a standardized formula set by Congress.

Most school boards have the power to determine their budgets themselves, but within a formula set by the state that keeps a lid on increases.

The lone tax rise mentioned was a 1 cent-a-gallon increase on gasoline, derived from a formula set in 1984.

Our current share, more than 30 percent, results from a formula set in 1973.

Pension fund managers, by contrast, are investing other people's money, typically according to a formula set by a board.

The numbers can be increased over the years under a formula set in the bill.