1.
The borrow taken by a man, for every 6 years it will be 3 times, then how much time it will be taken For 8 times:
Answer: Option 'B'
(R)2% ------> 6 years
7/2% × 6 = 21 years
Answer = 21 years
2.
Find the principle, interest on Rs.1200 at 8% p.a. for 2 years?
Answer: Option 'B'
P = ?
T = 2 years
R = 8%
I = Rs.1200/-
I = PTR/100
P = 100I/TR
P = (100 × 1200)/(2 × 8)
P = Rs.7500/-
3.
If the simple interest on Rs.400 for 3 years is Rs.4000/-, what is the rate of interest percent per annum?
Answer: Option 'C'
I = Rs.400/-
T = 3 years
P = Rs.4000/-
R = ?
S.I = (P×T×R/100)
R = (S.I×100)/(P×T)
R = (400×100)/(4000×3)
R = 10/3 = 3 1/3%
4.
Find simple interest on Rs.5000/- at 12% p.a. for 73days?
Answer: Option 'B'
73 days = 73/365 = T
P = Rs.5000
R = 12%
I = (5000*73/365*12)/100 = 120/-
I = Rs.120/-
5.
A person took some amount with some interest for 2 years, but increase the interest for 1%, he paid Rs.120/- extra, then how much amount he took?
Answer: Option 'B'
2 years = Rs.120/-
year = 120/2
Rate of Interest = 1%
100/1% × 120/2 = Rs.6000/-
P = Rs.6000/-