Not sure what you mean.
I posted links to pictures and values below.
There are 15 years in 60 quarters, as each year consists of 4 quarters. To find the number of years, you divide the total quarters by the number of quarters in a year: 60 divided by 4 equals 15.
Oh, dude, you're really making me do math here? Okay, fine. In 10 years, there are 40 quarters because there are 4 quarters in a year. But like, why are we counting quarters anyway? Are we starting a piggy bank or something?
There are 4 quarters in a year, so to find out how many years are in 25 quarters, you divide 25 by 4. This calculation results in 6.25 years. Therefore, 25 quarters is equivalent to 6 years and 3 months.
There are A LOT of differences between Japanese (Oriental and Asian) culture and American (Western and New World) culture. The biggest difference between American and Japanese culture is that Japanese culture is over 4000 years old, whereas American culture is only 300 years old. There are many different customs and beliefs, religion, language, ethnics and ways things are done between Japan and the USA that it would take far too long to explain in this answer.
Quarters and dimes used to have silver in them, although they do not nowadays. The years that quarters had silver in them were any years before 1965.
No they've had different images on the reverse over the years like all the special issues in the last several years to commemorate each state with a different reverse design.
One century is equal to 100 years. Therefore, 3 quarters of a century is 75 years.
If you mean the current "America the Beautiful" quarters, that are technically commemorative coins, Congress authorized production of 5 different designs per year from 2010 through 2021 with the possibility of adding 11 more years after 2021.
Since each year can be divided into 4 quarters, there would be 20 quarters in 5 years.
"The American Crisis" was written between the years 1777-1783.
All U.S. quarters dated 1964 and earlier are silver.
Around four years from the end of the American Revolution.