Question 1:
Shop A trainers normal price= £85
[tex]\frac{1}{3}[/tex] is off so it becomes [tex]\frac{1}{3}\times85=28.33[/tex]
So price becomes: [tex]85-28.33=56.67[/tex]
Shop B trainers normal price= £80
30% is off so it becomes: [tex]\frac{30}{100}\times80=24[/tex]
So price becomes: [tex]80-24=56[/tex]
So, Shop B has cheaper trainers.
Question 2:
In a sale all items are reduced by = 30%
On the final day the sale price are reduced by = 20%
On the day before the last day of the sale, the price of the sofa was [tex]0.7\times290=203[/tex]
As given, on the last day of the sale, the price was again reduced to 80% of the price the day before, so price becomes: [tex]0.8\times203=162.40[/tex]
Hence the price was £162.40
