How could I put these two formulas together?

[Veronsito]

Hello:

I have this table:

-------A-----------B----- COUNTIF=COUNTIF(B1:B5;">=01-12-15") (formula 2)
1 01-12-15 =A1+30 (31-12-2015) (formula 1)
2 01-12-15
3 05-12-12
5 08-12-15

I add a new column and add number to the dates with formule 1.

Next, I count the dates with COUNTIF=COUNTIF(B1:B5;">=01-12-15")

How could I put these two formulas together without adding column B?

Thanks!!

[Kamboj]

in c1 and down use

=TEXT(B1+30,"dd-mm-yyyy") &"-" & COUNTIF($B$1:$B$4,">=01-12-2015")

[Veronsito]

My mistake , now the answer would be the same?