Question 900940
I'm hungry!<br>
B = 5P
B - P = 360
Substitute the known value of P from the first equation into the second.
B - P = 360
(5P) - P = 360
4P = 360
Divide each side by 4
P = 90
If Pete sells 90, then Bill sells 450 (five times as many).  450-90=360