Answer: 44 shirts were a size medium
To find this answer...
We know that 80 T shirts are equal to 100% of the the T shirts
To find 55% of 80, we could cross multiply
80 ?
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100% 55%
1. We multiple 80 by 55 to get 4,400
2. We divide 4,400 by 100 to get 44
3. 44 is 55% of 80
Hope this helps!