r1

n1

r2

n2

r3

n3

r4

n4

Profit (£)

Offer

5

6

1

5

6

7

6

7

30.9381

5%

5

6

2

5

6

7

6

7

45.5365

20%

5

6

3

5

6

7

6

7

68.3430

20%

5

6

4

5

6

7

6

7

91.1750

20%

5

6

5

5

6

7

6

7

114.0324

20%