You can’t let “c” represent the missing leg
The proofs of above Questions is in attachment !
S + l. = 34
11s + 21l= 514
-11s - 11l= -374
11s + 21l = 514
10l = 140
l = 20 long sleeve shirts
s + 20 = 34
s = 14 short sleet shirts
6/h 10/30 that’s the answer to your question!