Maddie bought 2 packs of white T-shirts, and each pack contains 5 T-shirts, so she bought a total of 2 * 5 = 10 white T-shirts.
Maddie also bought 4 packs of blue T-shirts, and each pack contains 3 T-shirts, so she bought a total of 4 * 3 = 12 blue T-shirts.
In total, Maddie bought 10 white T-shirts + 12 blue T-shirts = 22 T-shirts.
Since each T-shirt costs $3, Maddie spent a total of 22 * $3 = $66 on T-shirts.
#### 66
The answer is: 66
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
What is the total amount that Maddie spent on T-shirts if she bought 2 packs of white T-shirts and 4 packs of blue T-shirts, with the white T-shirts coming in packs of 5 and the blue T-shirts coming in packs of 3, and each T-shirt costing $3?

### Answer:
