Get quarter start date of quarter by quarter number and year

Today I get instance when I need to get start date of quarter by quarter number and year.

Below is code for getting quarter start date by quarter number and year.

DECLARE @Quarter int = 1

DECLARE @Year int = 2016

DECLARE @dateString varchar(100)

SET @dateString = cast(@Year AS varchar(10)) + '-' + cast((3 + ((@Quarter - 1) * 3)) AS varchar(10)) + '-' + '1'

PRINT @dateString

I hope this will help someone. Comments and suggestions are welcome.

Thanks