which of the following is the rate percent per annum which would give difference in amount of interest equal to Rs 20 for Rs 1200 in 3 years and for Rs 800 in 4 years

• let the rate is x
  (x*1200*3)/100-(x*800*4)/100=20
  36x-32x=20
  x=5%(ans)
• 11 years agoHelpfull: Yes(6) No(1)
• If x is rate of int p.a, then
  36x-32x=20
  x= 5%
• 11 years agoHelpfull: Yes(1) No(5)