Interest rate calculation problem

Dear Member ,

I have problem on Interest rate calculation in below case ! please suggest me with suitable solution.

Problem: Mr. A ask me to give a loan of Rs. 10000. I agree to give him loan on following term,

Initially i give Rs.8500 after deducting Rs. 1500. and the repayment terms are Mr. A give Rs 100 per day for upto 100 day, i.e total Rs 10000.

what is the effective rate of interest annually?

Replies (1)

Dear Harsh,

Approximate 121%. 

 

Days Principle Interest Payment Balance
0     8,500.00                 -                     -       8,500.00
1     8,500.00          28.18          100.00     8,428.18
2     8,428.18          27.94          100.00     8,356.12
3     8,356.12          27.70          100.00     8,283.82
4     8,283.82          27.46          100.00     8,211.28
5     8,211.28          27.22          100.00     8,138.50
6     8,138.50          26.98          100.00     8,065.48
7     8,065.48          26.74          100.00     7,992.22
8     7,992.22          26.49          100.00     7,918.71
9     7,918.71          26.25          100.00     7,844.96
10     7,844.96          26.01          100.00     7,770.97
11     7,770.97          25.76          100.00     7,696.73
12     7,696.73          25.52          100.00     7,622.25
13     7,622.25          25.27          100.00     7,547.52
14     7,547.52          25.02          100.00     7,472.54
15     7,472.54          24.77          100.00     7,397.31
16     7,397.31          24.52          100.00     7,321.83
17     7,321.83          24.27          100.00     7,246.10
18     7,246.10          24.02          100.00     7,170.12
19     7,170.12          23.77          100.00     7,093.89
20     7,093.89          23.52          100.00     7,017.41
21     7,017.41          23.26          100.00     6,940.67
22     6,940.67          23.01          100.00     6,863.68
23     6,863.68          22.75          100.00     6,786.44
24     6,786.44          22.50          100.00     6,708.93
25     6,708.93          22.24          100.00     6,631.17
26     6,631.17          21.98          100.00     6,553.16
27     6,553.16          21.72          100.00     6,474.88
28     6,474.88          21.46          100.00     6,396.35
29     6,396.35          21.20          100.00     6,317.55
30     6,317.55          20.94          100.00     6,238.49
31     6,238.49          20.68          100.00     6,159.17
32     6,159.17          20.42          100.00     6,079.59
33     6,079.59          20.15          100.00     5,999.75
34     5,999.75          19.89          100.00     5,919.64
35     5,919.64          19.62          100.00     5,839.26
36     5,839.26          19.36          100.00     5,758.62
37     5,758.62          19.09          100.00     5,677.71
38     5,677.71          18.82          100.00     5,596.53
39     5,596.53          18.55          100.00     5,515.08
40     5,515.08          18.28          100.00     5,433.37
41     5,433.37          18.01          100.00     5,351.38
42     5,351.38          17.74          100.00     5,269.12
43     5,269.12          17.47          100.00     5,186.59
44     5,186.59          17.19          100.00     5,103.78
45     5,103.78          16.92          100.00     5,020.70
46     5,020.70          16.64          100.00     4,937.34
47     4,937.34          16.37          100.00     4,853.71
48     4,853.71          16.09          100.00     4,769.80
49     4,769.80          15.81          100.00     4,685.61
50     4,685.61          15.53          100.00     4,601.15
51     4,601.15          15.25          100.00     4,516.40
52     4,516.40          14.97          100.00     4,431.37
53     4,431.37          14.69          100.00     4,346.06
54     4,346.06          14.41          100.00     4,260.47
55     4,260.47          14.12          100.00     4,174.59
56     4,174.59          13.84          100.00     4,088.43
57     4,088.43          13.55          100.00     4,001.99
58     4,001.99          13.27          100.00     3,915.25
59     3,915.25          12.98          100.00     3,828.23
60     3,828.23          12.69          100.00     3,740.92
61     3,740.92          12.40          100.00     3,653.32
62     3,653.32          12.11          100.00     3,565.44
63     3,565.44          11.82          100.00     3,477.25
64     3,477.25          11.53          100.00     3,388.78
65     3,388.78          11.23          100.00     3,300.02
66     3,300.02          10.94          100.00     3,210.96
67     3,210.96          10.64          100.00     3,121.60
68     3,121.60          10.35          100.00     3,031.95
69     3,031.95          10.05          100.00     2,942.00
70     2,942.00            9.75          100.00     2,851.75
71     2,851.75            9.45          100.00     2,761.21
72     2,761.21            9.15          100.00     2,670.36
73     2,670.36            8.85          100.00     2,579.21
74     2,579.21            8.55          100.00     2,487.76
75     2,487.76            8.25          100.00     2,396.01
76     2,396.01            7.94          100.00     2,303.95
77     2,303.95            7.64          100.00     2,211.59
78     2,211.59            7.33          100.00     2,118.92
79     2,118.92            7.02          100.00     2,025.95
80     2,025.95            6.72          100.00     1,932.66
81     1,932.66            6.41          100.00     1,839.07
82     1,839.07            6.10          100.00     1,745.17
83     1,745.17            5.79          100.00     1,650.95
84     1,650.95            5.47          100.00     1,556.42
85     1,556.42            5.16          100.00     1,461.58
86     1,461.58            4.85          100.00     1,366.43
87     1,366.43            4.53          100.00     1,270.96
88     1,270.96            4.21          100.00     1,175.17
89     1,175.17            3.90          100.00     1,079.07
90     1,079.07            3.58          100.00         982.65
91         982.65            3.26          100.00         885.90
92         885.90            2.94          100.00         788.84
93         788.84            2.62          100.00         691.46
94         691.46            2.29          100.00         593.75
95         593.75            1.97          100.00         495.72
96         495.72            1.64          100.00         397.36
97         397.36            1.32          100.00         298.68
98         298.68            0.99          100.00         199.67
99         199.67            0.66          100.00         100.33
100         100.33            0.33          100.00              0.66
       1,500.66    10,000.00  

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