Answer:
medium box
Step-by-step explanation:
The computation is shown below:
For small box,
= £2.15 ÷ 50
= £0.043
For medium box
= £3.29 ÷ 80
= £0.041125
And, for large box
= £5.17 ÷ 125
= 0.04136
So as per the above calculation the medium box should represent the best value for the money