To get the answer you have to divide the sale price $172.80 by 73%.
So first you turn 73% into a decimal by moving the decimal two places to the left turning it into .73
$172.80 divided by .73 = $236.71
You can check by then multiplying $236.71 with .73
It is 153 meters
9*7 = 63
18*12= 216
216 - 63= 153
Speed=distance/time
distance=205.296
time=3.12
speed=205.296/3.12=65.8
answer is 65.8 miles per hour
Value of the expression will be 7
<u><em>Explanation</em></u>
Given value of the variables are :
and 
Given expression: 
So, <u>plugging the values</u> of
and
into the above expression, we will get...

So, the value of the expression will be 7.