The dollar is the US currency and divided into 100 smaller units or cents/ pennies. One of the world's reserve currencies, the U.S. dollar is the currency mostly used in international transactions. The dollar sign is as $ and was the result of the scribal abbreviation "ps" for 'peso' in the 18th century.
The p and s eventually came to be written over each other giving rise to $.
With increasing prices of everyday commodities and the students requiring leisure opportunities besides academic requirements it becomes absolutely essential to know the value of money.