Answer:
2 tee shirts
5 sleeves
Step-by-step explanation:
Let the number of shortsleeves be S and longsleeves L.
Total is 7
That is
L + S = 7
Total money spent is $73, while shorts cost 9 and longs 11
Hence,
9S + 11L = 73
We now have two equations we can solve simultaneously. From the first equation,
L = 7 - S
Putting this in equation 2
9s + 11(7 - S) = 73
9s + 77 - 11S = 73
2S = 4
S = 2
Since s = 2, then L = 5
