Hi!
Given:
[tex]\frac{1}{0.05}[/tex]
To make this easier, we know that a dollar is 100 cents, right? Therefore, we can multiply both the numerator and denominator by 100.
[tex]\frac{1 * 100}{0.05 * 100}[/tex]
When you are multiplying decimals by 10, 100, 1000, etc., you simply move the decimal point to the right based on the number of 0's the number has. In this case, 100 has two 0's therefore we move the decimal of 0.05 two spaces to the right.
[tex]0.05*100 = 5[/tex]
Now, we have:
[tex]\frac{100}{5}[/tex][tex]= 20[/tex]
Therefore, there are 20 nickels in 1 dollar.
For more information on how to divide whole numbers by decimals, see:
https://brainly.com/question/13282643
