Question

₹9000 becomes₹18000 at simple interest in 8 years.Find the rate per cent per annum.

Answer 1

Answer:

25%

Step-by-step explanation:

PNR/100=18000

9000×8×R/100=18000

720×R=18000

R=18000/720

R=25%

Answer 2

p = rs 9000 ; A = rs 18000 ; t = 8yrs

p+ si = A => 9000 + (9000*8*r/100) = 18000

=> (9000*8*r/100) = 9000 => r = 9000 *100/8*9000 => r = 12.5

•°• r = 12.5% ....