Rate = [(interest x 100) / (Principal x Time)] %
= (3600 x 100) / (12000 x 5)
= 6 %
? Rate = [(interest x 100) / (Principal x Time) ] %
? Rate = (2700 x 100) / (15000 x 3) %
? Rate = 6%
Let the annual installment be Rs. P
Then, [P + (P x 4 x 8)/100] + [P + (P x 3 x 8) / 100] + [P + (P x 2 x 8)/100 ] + [ P + (P x 1 x 8)/100] + P = 580
? 33P/25 + 31P/25 + 29P/25 + 27P/25 + P = 580
? (120 + 25)P = 580 x 25
? P = 100
Let sum = P, then SI = P and Time = 20 years
? Required rate = (100 x SI)/(P x T) = (100 x P) / (P x 20) = 5% per annum
Sum = (100 x SI) / (R x T)
= (100 x R) / (R x R)
= Rs. 100/R
S.I for 3 years = Rs. (2600 - 2240) = Rs . 360
S.I for 2 years = Rs. (360/3 x 2) = Rs. 240
? Required sum = Rs . (2240 - 240) = Rs. 2000
Let the principal = Rs. P
? Amount = Rs. 2P
? Interest = 2P - P = Rs.P
? Rate = (interest x 100) / (Principal x 20) = (P x 100) / (P x 20) = 5%
Rate = (Interest x 100) / (Principal x Time)
= (800 x 100) / (8000 x 2)
= 5%
S.I = Principal x Rate x Time / 100
? Amount - Principal = Principal x Rate x Time / 100
? 5712 - 4200 = (4200 x Rate x 4) /100
? 1512 = 42 x 4 x Rate
Rate = 1512 / (42 x 4) = 9%
On increasing 3%, new rate of interest = 9 + 3 = 12%
Simple interest on new rate = (4200 x 12 x 4) / 100 =Rs. 2016
Amount = Principal + Interest = 4200 + 2016 = Rs. 6216
Let the sum be ? P .
Then, SI = 4P - P = ? 3P
(P x 12 x T)/100 = 3P
? T = (3 x 100)/12 = 25 yr
Let the principle be ? P .
Then,
(P x 1 x 5)/100 + (P x 1 x 6)/100 + (P x 1 x 8)/100 = 760
? 5P/100 + 6P/100 + 8P/100 = 760
? 19P = 760 x 100
? P = (760 x 100)/19 = ? 4000
Hence, the principle is ? 4000.
Comments
There are no comments.Copyright ©CuriousTab. All rights reserved.