If a man can save Rs.5 more every year than he did the year before and if he saves 25 rupees in the first year after how many years will his savings be more than1000 rupees altogether and what will be the exact sum with him?

• After 16 years , he will have exactly 1000 Rs.
  after 17 years , he will have Rs 1100.
• 12 years agoHelpfull: Yes(2) No(0)
• In 1st yr he had 25rs,he save rs.5 more than last yr
  therefor the series will be 25,30,35,...
  Sn=n/2*(2a+(n-1)d)
  1000=n/2*((2*25)+(n-1)5)
  therefore n=16
  so after 16 yrs his savings will be above rs.1000
  such that Sn=(17/2)*(50+(16*5))=1105
• 12 years agoHelpfull: Yes(1) No(0)