Question

Find the Principal when :
1 . SI = 112.5, Rate = 6% per annum, Time = 2½
years .
2 . SI = 216, Rate = 9% per annum, Time = 1½ years .​

Answer 1

Answer:

from formula

S.I= P×(1+R×T)

1). 112.5=P×(1+6×30months)

P= 112.5/181

P=0.6

Answer 2

Answer:Find Simple Interest on Rs.3000 at 6 1/4% per annum for the period from ... Let sum be Rs. x then , S.I.=Rs.(x\(\frac{27}{2}\)*4*(1/100) ) = Rs.27x/50 ... Principal = Rs. 10000; Rate = 2% per half-year; Time = 2 years = 4 half-years. ... Principal = Rs. 16000; Time = 9 months =3 quarters;Rate = 20% per annum = 5% per quarter.