A Single Point Urban Interchange moves more traffic through a smaller amount of space. Compare the Single Point to the Cloverleaf design, which takes up a much greater amount of land. The Single Point design makes it easier to build new interchanges within existing state property.
A cent is one hundredth of a dollar (in fact, the word cent is from a Latin word meaning hundred). So no, one tenth of a penny is not one hundredth of a dollar. 36 cents equals how many hundredths of dollars? 1 cent is 1 hundredth of a dollar so 36 cents are 36 hundredths of a dollar.
From 1948-1963, the Mint produced Franklin half dollars. Once again, these were 90% silver and 10% copper. Weighing in at 12.5 grams, the current melt value of a Franklin half dollar is $8.67/each. In 1964, the Mint produced the last of their 90/10 half dollar coins. These were Kennedy half dollars, once again weighing in at 12.5 grams and having a current melt value of $8.67/each. From 1965-1970, the Mint transitioned to producing Kennedy half dollars that were 40% silver and 60% copper.