You have $27.00 to spend at the mall and a coupon for $6.00 off at your favorite store. A t-shirt costs $11.00. How many t-shirts can you buy using your coupon and money?

With the coupon, the total amount we need to subtract from our $27.00 is $6.00.

$27.00 - $6.00 = $<<27-6=21.00>>21.00
Each t-shirt costs $11.00.
So, $21.00 / $11.00 = <<21/11=1.9090909090909092>>1.91 t-shirts.
Since you cannot buy a fraction of a t-shirt, you can buy 1 t-shirt. Answer: \boxed{1}.

To determine how many t-shirts you can buy, you need to subtract the coupon amount from your available money and divide that total by the price of each t-shirt.

1. Start by subtracting the coupon amount from your available money:
$27.00 - $6.00 = $21.00

2. Next, divide the remaining money by the price of each t-shirt:
$21.00 ÷ $11.00 = 1.909090909090909

You can only buy whole t-shirts, so you can buy 1 t-shirt with your coupon and money.

To figure out how many t-shirts you can buy, we need to take into account your budget, the coupon discount, and the cost of each t-shirt.

First, subtract the coupon discount from your budget:
$27.00 - $6.00 = $21.00

Next, divide your remaining budget by the cost of each t-shirt:
$21.00 ÷ $11.00 = 1.909

Since you cannot buy a fraction of a t-shirt, you'll need to round down to the nearest whole number, which means you can buy a maximum of 1 t-shirt.

Therefore, you can buy 1 t-shirt using your coupon and money.