X 1 yuan for each T-shirt and x2 yuan for each photo album. rule

175/x 1 = 130/x2

X 1-x2=9 solution: x 1=35, x2=26.

That is, every T-shirt 35 yuan, every photo album 26 yuan.

(2)

Let the number of people buying cultural shirts be n, then n is an integer. There are:

x+35n+26(50-n)= 1800

270 & lt= x & lt=300

If n is an integer, the solution is: 200.

That is, there are three schemes.

Scheme 1: The number of people who buy cultural shirts is 23, and the number of people who buy photo albums is 27.

Scheme 2: The number of people who buy cultural shirts is 24, and the number of people who buy photo albums is 26.

Scheme 3: The number of people who buy cultural shirts is 25, and the number of people who buy photo albums is 25.