r₁

n₁

r₂

n₂

r₃

n₃

r₄

n₄

Profit (£)

Offer

2

2

1 - 2

6

1

7

1

7

39.9800

5%

2

2

3

6

1

7

1

7

49.9750

10%

2

2

4

6

1

7

1

7

66.6333

10%

2

2

5

6

1

7

1

7

83.2917

10%

2

2

6

6

1

7

1

7

99.9500

10%