ENGINEERING ECONOMIC ENHANCED EBOOK
ENGINEERING ECONOMIC ENHANCED EBOOK
14th Edition
ISBN: 9780190931940
Author: NEWNAN
Publisher: OXF
Question
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Chapter 4, Problem 104P
To determine

Tabular Representation of the balance due, principal payment, and interest rate.

Expert Solution & Answer
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Answer to Problem 104P

Tabular Representation of the balance due, principal payment, and interest rate.

Explanation of Solution

Given information:

  • Loan Amount - $900
  • Time period − 1 years
  • Rate of Interest − 6% per annum
  • Capital Recovery Factor:

The capital recovery factor is used to find the uniform annual amount A of a uniform series from a known present worth at the given interest rate i. It is calculated as:

A=Pi(1+i)n(1+i)n1=P(A/P,i,n).

Calculation:

The loan amount is $18,000. The monthly payments are to be made, therefore, the rate of interest will be divided by 12, while the time period will be multiplied by 12.

RoI=(8%)/12=0.067%Timeperiod=5×12=60MonthlyPayment=P(A/P,i,n)=$521.99

Based on this, following table can be calculated:

Months Total Payment Principal Interest Rate Opening Balance Closing Balance
1 547.46 367.46 180.00 27000.00 26632.54
2 547.46 369.91 177.55 26632.54 26262.62
3 547.46 372.38 175.08 26262.62 25890.25
4 547.46 374.86 172.60 25890.25 25515.39
5 547.46 377.36 170.10 25515.39 25138.03
6 547.46 379.88 167.59 25138.03 24758.15
7 547.46 382.41 165.05 24758.15 24375.74
8 547.46 384.96 162.50 24375.74 23990.78
9 547.46 387.52 159.94 23990.78 23603.26
10 547.46 390.11 157.36 23603.26 23213.15
11 547.46 392.71 154.75 23213.15 22820.44
12 547.46 395.33 152.14 22820.44 22425.12
13 547.46 397.96 149.50 22425.12 22027.16
14 547.46 400.61 146.85 22027.16 21626.54
15 547.46 403.29 144.18 21626.54 21223.25
16 547.46 405.97 141.49 21223.25 20817.28
17 547.46 408.68 138.78 20817.28 20408.60
18 547.46 411.41 136.06 20408.60 19997.19
19 547.46 414.15 133.31 19997.19 19583.05
20 547.46 416.91 130.55 19583.05 19166.14
21 547.46 419.69 127.77 19166.14 18746.45
22 547.46 422.49 124.98 18746.45 18323.96
23 547.46 425.30 122.16 18323.96 17898.66
24 547.46 428.14 119.32 17898.66 17470.52
25 547.46 430.99 116.47 17470.52 17039.53
26 547.46 433.87 113.60 17039.53 16605.66
27 547.46 436.76 110.70 16605.66 16168.90
28 547.46 439.67 107.79 16168.90 15729.24
29 547.46 442.60 104.86 15729.24 15286.63
30 547.46 445.55 101.91 15286.63 14841.08
31 547.46 448.52 98.94 14841.08 14392.56
32 547.46 451.51 95.95 14392.56 13941.05
33 547.46 454.52 92.94 13941.05 13486.53
34 547.46 457.55 89.91 13486.53 13028.97
35 547.46 460.60 86.86 13028.97 12568.37
36 547.46 463.67 83.79 12568.37 12104.70
37 547.46 466.76 80.70 12104.70 11637.93
38 547.46 469.88 77.59 11637.93 11168.06
39 547.46 473.01 74.45 11168.06 10695.05
40 547.46 476.16 71.30 10695.05 10218.88
41 547.46 479.34 68.13 10218.88 9739.55
42 547.46 482.53 64.93 9739.55 9257.02
43 547.46 485.75 61.71 9257.02 8771.27
44 547.46 488.99 58.48 8771.27 8282.28
45 547.46 492.25 55.22 8282.28 7790.03
46 547.46 495.53 51.93 7790.03 7294.50
47 547.46 498.83 48.63 7294.50 6795.67
48 547.46 502.16 45.30 6795.67 6293.51
49 547.46 505.51 41.96 6293.51 5788.01
50 547.46 508.88 38.59 5788.01 5279.13
51 547.46 512.27 35.19 5279.13 4766.86
52 547.46 515.68 31.78 4766.86 4251.18
53 547.46 519.12 28.34 4251.18 3732.06
54 547.46 522.58 24.88 3732.06 3209.47
55 547.46 526.07 21.40 3209.47 2683.41
56 547.46 529.57 17.89 2683.41 2153.83
57 547.46 533.10 14.36 2153.83 1620.73
58 547.46 536.66 10.80 1620.73 1084.07
59 547.46 540.24 7.23 1084.07 543.84
60 547.46 543.84 3.63 543.84 0.00

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Chapter 4 Solutions

ENGINEERING ECONOMIC ENHANCED EBOOK

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