r₁

n₁

r₂

n₂

r₃

n₃

r₄

n₄

Profit (£)

Offer

1

4

2

7

2

2

4

6

7.9977

15%

2

4

2

7

2

2

4

6

18.2789

15%

3

4

2

7

2

2

4

6

30.8434

15%

4

4

2

7

2

2

4

6

45.6914

15%