what is 10% of $78.35?
$${\mathtt{78.35}}{\mathtt{\,\times\,}}{\mathtt{10}}\% = {\mathtt{7.835}}$$
10% = 10/100=1/10
78.35 * (1/10) = 78.35 / 10
when you divide by 10 your have to move the decimal place over 1 spot to make the nnumber smaller
= 7.835
=$7.84 rounded to the nearest cent.
