3 You realize that you have a 5000 balance on your credit ca

3. You realize that you have a $5000 balance on your credit card, which is being assessed 18% yearly interest. If you cut the credit card up and make $100 payments every month on it, how many years until you’ve paid it off?

Solution

Balance on credit card = $ 5,000

Interest rate = 18 % p.a. or 0.18/12 = 0.015 p.m.

Monthly interest amount = 0.15 x $ 5,000 = $ 75

Amount goes to principal = $ 100 - $ 75 = $ 25

Amortization schedule:

Month

Total Principal (P)

Interest(I)

Principal Paid (p = P - I)

Balance Principal

(P - p)

1

5000.00

75.00

25.00

4975.00

2

4975.00

74.63

25.38

4949.63

3

4949.63

74.24

25.76

4923.87

4

4923.87

73.86

26.14

4897.73

5

4897.73

73.47

26.53

4871.19

6

4871.19

73.07

26.93

4844.26

7

4844.26

72.66

27.34

4816.93

8

4816.93

72.25

27.75

4789.18

9

4789.18

71.84

28.16

4761.02

10

4761.02

71.42

28.58

4732.43

11

4732.43

70.99

29.01

4703.42

12

4703.42

70.55

29.45

4673.97

13

4673.97

70.11

29.89

4644.08

14

4644.08

69.66

30.34

4613.74

15

4613.74

69.21

30.79

4582.95

16

4582.95

68.74

31.26

4551.69

17

4551.69

68.28

31.72

4519.97

18

4519.97

67.80

32.20

4487.77

19

4487.77

67.32

32.68

4455.08

20

4455.08

66.83

33.17

4421.91

21

4421.91

66.33

33.67

4388.24

22

4388.24

65.82

34.18

4354.06

23

4354.06

65.31

34.69

4319.37

24

4319.37

64.79

35.21

4284.16

25

4284.16

64.26

35.74

4248.42

26

4248.42

63.73

36.27

4212.15

27

4212.15

63.18

36.82

4175.33

28

4175.33

62.63

37.37

4137.96

29

4137.96

62.07

37.93

4100.03

30

4100.03

61.50

38.50

4061.53

31

4061.53

60.92

39.08

4022.46

32

4022.46

60.34

39.66

3982.79

33

3982.79

59.74

40.26

3942.53

34

3942.53

59.14

40.86

3901.67

35

3901.67

58.53

41.47

3860.20

36

3860.20

57.90

42.10

3818.10

37

3818.10

57.27

42.73

3775.37

38

3775.37

56.63

43.37

3732.00

39

3732.00

55.98

44.02

3687.98

40

3687.98

55.32

44.68

3643.30

41

3643.30

54.65

45.35

3597.95

42

3597.95

53.97

46.03

3551.92

43

3551.92

53.28

46.72

3505.20

44

3505.20

52.58

47.42

3457.78

45

3457.78

51.87

48.13

3409.64

46

3409.64

51.14

48.86

3360.79

47

3360.79

50.41

49.59

3311.20

48

3311.20

49.67

50.33

3260.87

49

3260.87

48.91

51.09

3209.78

50

3209.78

48.15

51.85

3157.93

51

3157.93

47.37

52.63

3105.30

52

3105.30

46.58

53.42

3051.88

53

3051.88

45.78

54.22

2997.66

54

2997.66

44.96

55.04

2942.62

55

2942.62

44.14

55.86

2886.76

56

2886.76

43.30

56.70

2830.06

57

2830.06

42.45

57.55

2772.51

58

2772.51

41.59

58.41

2714.10

59

2714.10

40.71

59.29

2654.81

60

2654.81

39.82

60.18

2594.63

61

2594.63

38.92

61.08

2533.55

62

2533.55

38.00

62.00

2471.56

63

2471.56

37.07

62.93

2408.63

64

2408.63

36.13

63.87

2344.76

65

2344.76

35.17

64.83

2279.93

66

2279.93

34.20

65.80

2214.13

67

2214.13

33.21

66.79

2147.34

68

2147.34

32.21

67.79

2079.55

69

2079.55

31.19

68.81

2010.75

70

2010.75

30.16

69.84

1940.91

71

1940.91

29.11

70.89

1870.02

72

1870.02

28.05

71.95

1798.07

73

1798.07

26.97

73.03

1725.04

74

1725.04

25.88

74.12

1650.92

75

1650.92

24.76

75.24

1575.68

76

1575.68

23.64

76.36

1499.32

77

1499.32

22.49

77.51

1421.81

78

1421.81

21.33

78.67

1343.13

79

1343.13

20.15

79.85

1263.28

80

1263.28

18.95

81.05

1182.23

81

1182.23

17.73

82.27

1099.96

82

1099.96

16.50

83.50

1016.46

83

1016.46

15.25

84.75

931.71

84

931.71

13.98

86.02

845.68

85

845.68

12.69

87.31

758.37

86

758.37

11.38

88.62

669.74

87

669.74

10.05

89.95

579.79

88

579.79

8.70

91.30

488.49

89

488.49

7.33

92.67

395.82

90

395.82

5.94

94.06

301.75

91

301.75

4.53

95.47

206.28

92

206.28

3.09

96.91

109.37

93

109.37

1.64

98.36

11.01

94

11.01

0.17

99.83

-88.82

Hence it will take 94 months or 94/12 = 7.8 years to pay off the loan.

Month

Total Principal (P)

Interest(I)

Principal Paid (p = P - I)

Balance Principal

(P - p)

1

5000.00

75.00

25.00

4975.00

2

4975.00

74.63

25.38

4949.63

3

4949.63

74.24

25.76

4923.87

4

4923.87

73.86

26.14

4897.73

5

4897.73

73.47

26.53

4871.19

6

4871.19

73.07

26.93

4844.26

7

4844.26

72.66

27.34

4816.93

8

4816.93

72.25

27.75

4789.18

9

4789.18

71.84

28.16

4761.02

10

4761.02

71.42

28.58

4732.43

11

4732.43

70.99

29.01

4703.42

12

4703.42

70.55

29.45

4673.97

13

4673.97

70.11

29.89

4644.08

14

4644.08

69.66

30.34

4613.74

15

4613.74

69.21

30.79

4582.95

16

4582.95

68.74

31.26

4551.69

17

4551.69

68.28

31.72

4519.97

18

4519.97

67.80

32.20

4487.77

19

4487.77

67.32

32.68

4455.08

20

4455.08

66.83

33.17

4421.91

21

4421.91

66.33

33.67

4388.24

22

4388.24

65.82

34.18

4354.06

23

4354.06

65.31

34.69

4319.37

24

4319.37

64.79

35.21

4284.16

25

4284.16

64.26

35.74

4248.42

26

4248.42

63.73

36.27

4212.15

27

4212.15

63.18

36.82

4175.33

28

4175.33

62.63

37.37

4137.96

29

4137.96

62.07

37.93

4100.03

30

4100.03

61.50

38.50

4061.53

31

4061.53

60.92

39.08

4022.46

32

4022.46

60.34

39.66

3982.79

33

3982.79

59.74

40.26

3942.53

34

3942.53

59.14

40.86

3901.67

35

3901.67

58.53

41.47

3860.20

36

3860.20

57.90

42.10

3818.10

37

3818.10

57.27

42.73

3775.37

38

3775.37

56.63

43.37

3732.00

39

3732.00

55.98

44.02

3687.98

40

3687.98

55.32

44.68

3643.30

41

3643.30

54.65

45.35

3597.95

42

3597.95

53.97

46.03

3551.92

43

3551.92

53.28

46.72

3505.20

44

3505.20

52.58

47.42

3457.78

45

3457.78

51.87

48.13

3409.64

46

3409.64

51.14

48.86

3360.79

47

3360.79

50.41

49.59

3311.20

48

3311.20

49.67

50.33

3260.87

49

3260.87

48.91

51.09

3209.78

50

3209.78

48.15

51.85

3157.93

51

3157.93

47.37

52.63

3105.30

52

3105.30

46.58

53.42

3051.88

53

3051.88

45.78

54.22

2997.66

54

2997.66

44.96

55.04

2942.62

55

2942.62

44.14

55.86

2886.76

56

2886.76

43.30

56.70

2830.06

57

2830.06

42.45

57.55

2772.51

58

2772.51

41.59

58.41

2714.10

59

2714.10

40.71

59.29

2654.81

60

2654.81

39.82

60.18

2594.63

61

2594.63

38.92

61.08

2533.55

62

2533.55

38.00

62.00

2471.56

63

2471.56

37.07

62.93

2408.63

64

2408.63

36.13

63.87

2344.76

65

2344.76

35.17

64.83

2279.93

66

2279.93

34.20

65.80

2214.13

67

2214.13

33.21

66.79

2147.34

68

2147.34

32.21

67.79

2079.55

69

2079.55

31.19

68.81

2010.75

70

2010.75

30.16

69.84

1940.91

71

1940.91

29.11

70.89

1870.02

72

1870.02

28.05

71.95

1798.07

73

1798.07

26.97

73.03

1725.04

74

1725.04

25.88

74.12

1650.92

75

1650.92

24.76

75.24

1575.68

76

1575.68

23.64

76.36

1499.32

77

1499.32

22.49

77.51

1421.81

78

1421.81

21.33

78.67

1343.13

79

1343.13

20.15

79.85

1263.28

80

1263.28

18.95

81.05

1182.23

81

1182.23

17.73

82.27

1099.96

82

1099.96

16.50

83.50

1016.46

83

1016.46

15.25

84.75

931.71

84

931.71

13.98

86.02

845.68

85

845.68

12.69

87.31

758.37

86

758.37

11.38

88.62

669.74

87

669.74

10.05

89.95

579.79

88

579.79

8.70

91.30

488.49

89

488.49

7.33

92.67

395.82

90

395.82

5.94

94.06

301.75

91

301.75

4.53

95.47

206.28

92

206.28

3.09

96.91

109.37

93

109.37

1.64

98.36

11.01

94

11.01

0.17

99.83

-88.82

3. You realize that you have a $5000 balance on your credit card, which is being assessed 18% yearly interest. If you cut the credit card up and make $100 payme
3. You realize that you have a $5000 balance on your credit card, which is being assessed 18% yearly interest. If you cut the credit card up and make $100 payme
3. You realize that you have a $5000 balance on your credit card, which is being assessed 18% yearly interest. If you cut the credit card up and make $100 payme
3. You realize that you have a $5000 balance on your credit card, which is being assessed 18% yearly interest. If you cut the credit card up and make $100 payme

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