Answer:
Step-by-step explanation:
Price before decrease = £ x
If price before decrease is 100, then price after decrease = 100- 12 = £ 88
100:88 = x:600
[tex]\frac{100}{88}=\frac{x}{600}\\\\\frac{100}{88}*600=x\\681.82=x[/tex]
Price before decrease = £ 681.82
