Question

At the thrift store the ratio of long sleeves shirts to short sleeve shirts was 4:3 for every short sleeve shirts how many long sleeve shirts

Answer 1

Here the question is asking us basically for unit ratio which is kinda like unit rate except ratio wise.
since the ratio is 4:3 our answer will be 2:1
this is because if you keep taking one shirt out, you still have to have at least one shirt on the short sleeve side, you end up with 2 long sleeves for every 1 short sleeve

Answer 2

Does it say how many shirts there are total?