First, we need to understand what a quarter dollar is. A quarter dollar, simply called a quarter, is a coin worth 0.25, or 1/4, of a US dollar. Therefore, we have four quarters in one dollar.
Now, let's figure out how many quarters Joshua can get from his check amounting to $16.79.
To get the maximum possible number of quarters from a certain amount, we divide the total amount by the value of one quarter. If the division results in a decimal number, we need to round this number down to the nearest whole number because we can't have a fraction of a coin.
Given that Joshua's check is for $16.79, when you divide 16.79 by 0.25 (the value of a quarter), it will yield 67 with some decimal remainder. Since you cannot split a physical coin, we disregard the decimal and take the whole number.
Therefore, Joshua can get quarters from his check of $16.79.
Answer: 67