System of equations
0.05x + 0.25y = 8.10
0.25x + 0.05y = 17.70
x = 67, y= 19
There are 67 nickels and 19 quarters
1/3 of 154.35 is 51.45
$51.45 will be saved on the jacket with it's regular price.
154.35 - 51.45 = 102.90
The sale price of the jacket will be 102.90 .
Hope I was able to help!