Dahlia bought Granny Smith and Macintosh apples at the grocery store. The Granny Smith apples were $1.35 each if you bought 6. Find the cost of each Macintosh apple if the total cost is $15 and she brought 6 of each
Each Macintosh apple cost $___
Since Dahlia bought 6 of each type of apple, and the total cost is $15, the cost of the Granny Smith apples is 6 * $1.35 = $<<6*1.35=8.10>>8.10
So, the cost of the 6 Macintosh apples is $15 - $8.10 = $<<15-8.10=6.90>>6.90.
Therefore, the cost of each Macintosh apple is $6.90 / 6 = $<<6.90/6=1.15>>1.15. Answer: \boxed{1.15}.