SOLUTION: The track team sold 40 t-shirts. Short sleeve t-shirts sold for $9.90 and long sleeve t-shirts sold for $12.75. In all, $421.65 was taken in.
How many short sleeve t-shirts were
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-> SOLUTION: The track team sold 40 t-shirts. Short sleeve t-shirts sold for $9.90 and long sleeve t-shirts sold for $12.75. In all, $421.65 was taken in.
How many short sleeve t-shirts were
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Question 1182442: The track team sold 40 t-shirts. Short sleeve t-shirts sold for $9.90 and long sleeve t-shirts sold for $12.75. In all, $421.65 was taken in.
How many short sleeve t-shirts were sold? Found 2 solutions by mananth, josgarithmetic:Answer by mananth(16946) (Show Source):
9.90 x + 12.75 y = 421.65 .............2
Eliminate y
multiply (1)by -12.75
Multiply (2) by 1
-12.75 x -12.75 y = -510.00
9.90 x 12.75 y = 421.65
Add the two equations
-2.85 x = -88.35
/ -2.85
x = 31.00
plug value of x in (1)
x + y = 40
31.00 + y = 40
y = 9
y = 9
Ans x = 31
y = 9.00
31 Number of half T shirts
9 Number of Full T shirts
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