According to question ,
Required Sum = PW of Rs. 702 due 6 months hence + PW of Rs. 702 due 1 year hence = Rs. 1325
Thus , required sum is Rs. 1325 .
T.D = (16 x 100)/ (4/3 x 15/2) = Rs. 160
B.D. = Rs. 160 + Rs. 16 = Rs. 176
? Sum = [176 x 100] / [(4/3) x (15/2)] = Rs. 1760
160 = ?1600 x B.G.
? B.G. = (160 x 160)/1600 = Rs. 16
? Banker's discount = 160 + 16 = Rs. 176
[? B.D. = T.D. + B.G.]
Clearly S.I. on Rs. 17850 at 5% is Rs. 357.
? Time = (100 x 357) / (17850 x 5) = 2/5 = 146 days
So, the bill is 146 days prior to 24th May, the legally due date
May, April, March, Feb., Jan.,Dec.,
= 24 + 30 + 31 + 28 + 31 + 2 = 146 days
So, the bill was discounted on 29 Dec. 1990.
Let the sum be Rs. 100. Then, B.D = Rs. 5.
Proceeds = Rs. (100 - 5) = Rs. 95.
? Rs. 5 must be the interest on Rs. 95 for 1 year.
So, rate = (100 x 5) / (95 x 1) = 55/19%
Face value of the bill = ? 10200
Date on which the bill was drawn = July 14 at 5 Months
Nominally due date = Dec. 14
Legally due date = Dec. 17
Date on which the bill was discounted = Oct. 05
Unexpired time
Oct.-26, Nov. - 30, Dec - 17 = 73 days = 73/365 yr = 1/5 yr
? BD = SI on ? 10200 for 1/5 yr
= (10200 x (10/100) x 1/5)
= ? 204
TD = [10200 x (1/5) x 10] / [100 + 10 x (1/5)]
= (10200 x 2)/102 = ? 200
BG = (BD) - (TD) = (204 - 200) = ? 4
Money received by the holder of the bill = ? (10200 - 204) = ? 9996
Let TD = N, then BD = 11N/10
Sum = (BD x TD) / (BD - TD) = [(11N/10) x N] / [11N/10 - N]
= [11N2/10] / [N/10] = 11N
SI on ? 11N for 4 yr is ? 11N/10.
? Rate = (100 x 11N/10)/(11N x 4)% per annum
= 2.5% per annum
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