Meenu read `2/3` of a book on the first day, `1/5` on the second day and rest on the third day.What fraction of the book she read on the third day?

I read 2/5 of the book inn one day and 1/5 of the book next day. What portion of book did I read in two days?

Neeta saves in a Mahila Bachat Gat ₹2 on the first day, ₹4 on the second day, ₹6 on the third day and so on. What will be her saving in the month of February, 2010?