Ответ:

1.Chicken and chips- £6.99 |×1

tea- £1.80 |×1

sandwiches - £3.75 |×1

milk- £1.80 |×2

bill: £16.14

2.fish and chips- £5.99 |×3

sandwiches- £3.75 |×1

tea- £1.80 |×2

juice- £2.20 |×2

cakes- £3.30 |×4

bill: £42.92

3.idk

4.a)I think 1 flower cost £0.54