Dahlia bought Granny Smith and Macintosh apples at the grocery store The Granny Smith apples were $1.35 each if you bought six find the cost of each Macintosh Apple if the total cost is $15 and she bought six of each
If the Granny Smith apples were $1.35 each and Dahlia bought six, the cost of six Granny Smith apples is 1.35*6 = <<1.35*6=8.1>>8.1 dollars.
The cost of both types of apples is 15 dollars and the Granny Smith apples cost 8.1 dollars, so the cost of the Macintosh apples is 15-8.1 = <<15-8.1=6.9>>6.9 dollars.
The cost of each Macintosh apple is 6.9/6 = <<6.9/6=1.15>>1.15 dollars. Answer: \boxed{1.15}.