Hello
You have the ratio 5 : 1
z = the total price
x = 5/6z
y = 1/6z
equation with x and y :
(x - y)z = 80
(5/6 - 1/6)z = 80
4z/6 = 80
4z = 80*6
4z = 480
the total price = $480
you can verify with values
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