<PRE><B>Question 1049889</B>
Hi there,
Make x = 500 peso tickets
y = 400 peso tickets
x + y = 450........(1)
500x + 400y = 207,500.......(2
Multiply Eq(1) by 400
x + y = 450........(1)
400x + 400y = 180,000.......(1)
500x + 400y = 207,500.......(2)
Subtract Eq(1) from Eq(2)
100x    =     27500
x      =    275
Substitute x = 275 into Eq(1)
x + y = 450........(1)
275 + y = 450
y = 450 - 275
y = 175.
275 tickets at 500 pesos
175 tickets at 400 pesos.
Hope this helps :-)</PRE>