Answer:-2.75 x = -233.75 Â
/ -2.75 Â
x = 85.00 Â
plug value of x in (1) Â
1.00 x + 1.00 y = 150.00 Â
85.00 + y = 150.00 Â
y = 150.00 -85.00
y = 65.00 Â
y = 65.00 Â
x= 85 number of child tickets Â
y= 65 number of adult tickets
Step-by-step explanation:x= number of child tickets Â
y= number of adult tickets Â
Total sold Â
1.00 x + 1.00 y = 150.00 .............1 Â
Total value Â
4.75 x + 7.50 y = 891.25 .............2 Â
Eliminate y Â
multiply (1)by -7.50 Â
Multiply (2) by 1.00 Â
-7.50 x -7.50 y = -1125.00 Â
4.75 x + 7.50 y = 891.25