Last 3 sums

Last 3 sums 1625, will the e interest on a certain is — equal. sum "'ill yield •106 as simple in 1 2 month' sum will amount to in 2 i years per annum m Of money becomes - of itself in 5 a certain terest. sum Of money lent at 12 • per annum produce the same in 5 years at annum9 | 250 amount to | 3 years at interest. same rate?

Dear Student
Here is the solution to the question (12)

Let the principle be rs x
Time is given as 5 years. 

So, the amount becomes 8x/5

Now ,
We know that 
Si = amount - p
SI =8x/5 - x = 3x/5

Now we also know that


So, the rate of interest is equal to 12 percent per annum. 

PS: Kindly post separate question in separate thread

Regards

 

  • -1
Last one .
Dear student
The si is given 300 (1550-1250)
So
Si=prt/100
Where p= 1250
t=3
300=1250*r*3/10
8%
The question asked for
p=3200
t=4
r=8
Si= 3200*8*4/100
Si=1024
Amount = 3200+1024=4224
Regards
  • 1
What are you looking for?