Mobile Phones

Scheme 1: A payment of £15 per month for the line rental, plus 50p per minute for each call made.

X Minutes

Cost (£)

5

£17.50

0

£20

5

£22.50

20

£25

30

£30

40

£35

50

£40

60

£45

70

£50

80

£55

Scheme 2: A payment of £24 per month for the line rental, plus 20p per minute for each call made

X Minutes

Cost (£)

5

£25

0

£26

5

£27

20

£28

30

£30

40

£32

50

£34

60

£36

70

£38

80

£40

Scheme 3: A payment of £31 per month for the line rental, plus 10p per minute for each call made.

X Minutes

Cost (£)

5

£31.50

0

£32

5

£32.50

20

£33

30

£34

40

£35

50

£36

60

£37

70

£38

80

£39

Scheme 1: 20 minutes = (50p x 20minutes) + £15 per month = C

C= £15+0.5 x 20 = £25

80 minutes = (50p x 80minutes) + £15 per month = C

C = £15+0.5 x 80 = £55

General Equation = C = 15+0.5x

(x = number of minutes)

Scheme 2: 20 minutes = (20p x 20minutes) + £24 per month = C

C = £24+0.2 x 20 = £28

80 minutes = (20p x 80minutes) + £24 per month = C

C = £24+0.2 x 80 = £40

General Equation = C = 24+0.2x

(x = number of minutes)

Scheme 3: 20 minutes = (10p x 20minutes) + £31 per month = C

C = £31+0.1 x 20 = £33

80 minutes = (10p x 80minuites) + £31 per month = C

C = £31+0.1 x 80 = £39

General Equation = C = 31+0.1x

(x = number of minutes)

Conclusion

My conclusion to my investigation is that all 3 schemes are cheap in there own way. Scheme 1 is good for people who like to make the odd call for a very short period of time in a month. Scheme 2 is good for people who maybe are more likely to use there mobiles more often but not for long in a month. Scheme 3 is good for people who want to and need to use it frequently and make long periods of calls per month.

So there is no real best scheme for people to use, it depends on who the person is and how often and long they will use the mobile phone in a month. The 3 schemes could be used for a family who has 4 members. Scheme 1 would be ideal for there kids who would just need it for the quick call to get picked up from school, scheme 2 would maybe suite the mother because she would want it to keep in contact with her kids and her husband, and scheme 3 mite benefit the husband who could use it for keeping in contact with his family and also to use it for clients at work.