Answer:
Step-by-step explanation:
Price of two 50 ml bottle = 45 + (45/2)
= 45 + 22.5
= £ 67.50
100 ml = 67.50
Price per 1 ml = 67.50/100 = £ 0.675
Price of 80 ml bottle = £ 55
80 m l = £ 55
Price per 1 ml = 55/80 = £0.6875
So, buying two 50 ml bottle is the best value for money
