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ikadub [295]
2 years ago
14

Quick algebra 1 question for 10 points!

Mathematics
1 answer:
bazaltina [42]2 years ago
4 0

denote \: by \: s \: the \: cost \: of \: a \: sweatshirt \\ denote \: by \: t \: the \: cost \: of \: a \: t \: shirt

3t + 7s = 240.5 \\ 6t + 5s = 220

- 6t - 14s =  - 481 \\ 6t + 5s = 220

- 9s = -  261 \\ s =  \frac{ - 261}{ - 9}  = 29 \: dollars

3t + 7(29) = 240.5 \\

3t + 203 = 240.5

3t = 37.5

t = 12.5 dollars

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