Question

Find the principal when :
(i) final amount is rupees 4500 at 20% per annum for 5 years ​

Answer 1

Answer:

Step-by-step explanation:

Amount(A)=Rs.4500

Rate(R)=20%

Time(T)=5years

Let Principal (P) =Rs.100

Then S.I.=  

100

PRT

​

 

=  

100

100×20×5

​

=Rs.100

and amount = P + S.I. =Rs.100+Rs.100=Rs.200

If amount is Rs.200 then Principal =Rs.100

and if amount is Rs.4500 then principal

=  

200

100

​

×4500

=Rs.2250

Answer 2

Step-by-step explanation:

let principal be Rs x. SI Xx20x5/100= x

amount 4500= x+x=2x therefore x= 2250 so principal amount are Rs 2250/- ans.