Question

What principal amount to₹900 in 8years at rate of 10 percent per annum

Answer 1

let the principal be x
therefore interest = PRT /100
Amount = P+ PRT/100
=> 900 = x +x×8×10/100
=> 900 = x+4x/5
=> 900 = (5x+4x)/5
=> 4500=9x
=> 9x=4500
=> x = ₹500