If the sum of the first ‘n’ terms of an Arithmetic Progression is 100 and the
sum of the next ‘n’ terms of the Arithmetic Progression is 300, then what is the
ratio of the first term and the common difference?

1) 2:1
2) 1:2
3) 1:3
4) cbd

• Sn = 100
  S2n = 100+300 = 400
  
  put n = 1
  s1 = t1 = 100 = a
  
  s2n = s2 = 400 = t2+t1
  t2 = 400 - t1 = 300
  t2 = t1+d
  d = 300-100 = 200
  
  a/d = 100/200 = 1:2
• 6 Months agoHelpfull: Yes(0) No(0)