The bidding date, originally December 20, 1961, was postponed to January 22, 1962, to clarify the details of the arch construction. About 50 companies that had requested the construction requirements received bidding invitations. Extending from $11,923,163 to $12,765,078, all four bids exceeded the engineer estimate of $8,067,000. Wirth had a committee led by George B. Hartzog Jr. determine the validity of the bids in light of the governments conditions. Following a meeting with the bidders, the committee affirmed the bids reasonableness, and Wirth awarded the lowest bidder, MacDonald Construction Co. of St. Louis, the contract for the construction of the arch and the visitor center. On March 14, 1962, he signed the contract and received from Tucker $2,500,000, the citys subsidy for the phase. MacDonald reduced its bid $500,000 to $11,442,418. The Pittsburgh-Des Moines Steel Company served as the subcontractor for the shell of the arch.

How many dollars did the largest bid exceed the engineer estimate by?
A: 4698078

There were 4,280 households of which 32.9% had children under the age of 18 living with them, 39.2% were married couples living together, 16.4% had a female householder with no husband present, 5.7% had a male householder with no wife present, and 38.7% were non-families. 32.0% of all households were made up of individuals and 14% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.90.

How many percent are not non-families?
A: 61.3

In the city, the population was spread out with 28.1% under the age of 18, 9.2% from 18 to 24, 26.2% from 25 to 44, 21.4% from 45 to 64, and 15.1% who were 65 years of age or older.  The median age was 36 years. For every 100 females, there were 83.5 males.  For every 100 females age 18 and over, there were 77.7 males.

How many percent were not 65 years of age or older?
A:
84.9