Question: I need a clearer understanding of how to solve: Justin has a jar with many coins in it. The jar has 32 quarters, 95 dimes, 120 nickels, and 750 pennies. What is the total dollar amount in the jar?
Answer: 
There are 32/4 = 8 dollars in quarters.
There are 95/10 = 9.5 dollars in dimes.
There are 120/20 = 6 dollars in nickels.
There are 750/100 = 7.5 dollars in pennies.
Altogether there are 8+9.5+6+7.5 = 31 dollars in the jar.