Math
posted by alexis .
A department store sold 63 shirts one day. All shortsleeved shirts cost $15.00 each and all longsleeved shirts cost $22.00 each. Total receipts for the day were $1,134.00 . How many of each kind of shirt were sold?

number of shortsleeved shirts  x
number of longsleeved shirts  63x
15x +22(63x) = 1134
15x + 1386  22x = 1134
7x = 252
x = 36
so 36 shortsleeved and 27 longsleeved shirts 
Short shirt x
Long shirt y
x + y = 63
15x + 22y = 1134
substitute x = 63y
15(63y) + 22y = 1134
945 15y + 22y = 1134
7y = 189
y =27
x = 36
shortsleeved shirts : 27
Longsleeved shirts: 36
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