Answer:
The cost of one thin crust pizza is $6.5
The cost of one deep dish pizza is $8
Step-by-step explanation:
Let x= cost of one thin crust pizza
Let y=cost of one deep dish pizza
If Four thin crust pizzas and four deep dish pizzas cost $58
4x+4y=58.............(i)
Six thin crust pizzas and three deep dish pizzas cost $63
6x+3y=63....................(ii)
We solve equations (i) and (ii) simultaneously
4x+4y=58.............(i)
6x+3y=63.............(ii)
To make the coefficeint of y the same, multiply (i) by 3 and (ii) by 4
[4x+4y=58] X 3
12x+12y=174
[6x+3y=63] X 4
24x+12y=252
Eliminating y by subtracting (iv) from (iii)
12x+12y=174............(iii)
24x+12y=252............(iv)
-12x=-78
x=6.5
Substitute x=6.5 into any of the equations, say (iv)
(24X6.5)+12y=252
156+12y=252
12y=252-156=96
y=96/12=8
x=6.5, y=8
