Ten > Sequence and Series

Asked by Basanta · 2 years ago

Kuber saves Rs 100 during the first month, Rs 150 in the next month, and Rs.200 in the third month. If he continues his saving in this sequence,

1. In how many months will he save Rs 257500?
2. Find the total savings at the end of 7 years. 
3. What will be the amount of savings only in the $\rm 20^{th}$ month?