SOLUTION: A T-shirt costs 5 times as much as a singlet. For $800, a trader can buy 32 more singlets than t-shirts. How much does a T-shirt cost?

Instead of doing it for you, I am doing another problem exactly like yours,
with the numbers changed.  I'm doing this one instead:

A T-shirt costs 6 times as much as a singlet. For $900, a trader can buy 34
more singlets than t-shirts. How much does a T-shirt cost?
A singlet costs $x
A T-shirt costs $6x

For $900, a trader can buy $900/($x) = 900/x singlets
For $900, a trader can buy $900/($6x) = 180/x T-shirts



Multiply through by x







A singlet costs $21.18.

A T-shirt costs $6x = $127.08

Edwin