The cost of a single T-shirt.

Question

A T-shirt cost 5 times as much as a singlet, for $800, a trader Can buy 32 singlet than T-shirts. How much does a T-shirt cost?

Answer 1

HINT:

Suppose a t-shirt costs $\$x$ each and a singlet costs $\$y$ each.

If a t-shirt costs $k$ times as much as a singlet, then $$x=ky$$

If $\$m$ can buy $A$ t-shirts and $B$ singlets, then $$Ax+By=m$$