Answer:
296%
Step-by-step explanation:
Total number of biscuits sold = 720
70% of 720 = 0.7 x 720
= 504
Amount of 504 biscuits sold = 504 x 25p
= 12600p
But 100p = £1
So that,
12600p = £126
30% of 720 = 0.3 x 720
= 216
But, she sold 216 biscuits at 4 for 60p.
The amount of 216 biscuits sold = [tex]\frac{216}{4}[/tex] x 60p
= 54 x 60p
= 3240p
= £32.40
Total amount on sales = £126 + £32.40
= £158.40
But her cost price is £40.
Profit = £158.40 - £40
= £118.40
Her percentage profit = [tex]\frac{118.40}{40}[/tex] x 100
= 296%
