A camera costs $175. Tia and his brother share the cost in the ratio 2:3. What is Tia's share?

To find Tia's share, we need to divide the total cost of the camera by the sum of the ratio parts, and then multiply that by Tia's ratio part.

First, let's calculate the sum of the ratio parts:
2 + 3 = 5

Next, divide the total cost of the camera by the sum of the ratio parts:
$175 / 5 = $35

Finally, multiply Tia's ratio part (2) by the result from the previous step to find Tia's share:
2 * $35 = $70

Therefore, Tia's share of the camera cost is $70.

2/5 = T/175

5T = 350

T = 70