r₁

n₁

r₂

n₂

r₃

n₃

Profit (£)

Offer

1

10

6

15

3

12

1.1083

10%

2

10

6

15

3

12

2.3416

10%

3

10

6

15

3

12

3.7198

10%

4

10

6

15

3

12

5.2663

10%

5

10

6

15

3

12

7.0094

10%

6

10

6

15

3

12

8.9822

10%

7

10

6

15

3

12

11.2237

10%

8

10

6

15

3

12

13.7799

10%

9

10

6

15

3

12

16.7042

10%

10

10

6

15

3

12

20.0588

10%