Question 1022204
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E=hours at $8; T=hours at $12
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E+T=30hrs
E=30hrs-T
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$8E+$12T=$268
$8(30-T)+$12T=$268
$240-$8T+$12=$268
$4T=$28
T=7
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E=30-T=30-7=23
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ANSWER: 23 hours worked at $8, and 7 hours at $12.
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CHECK:
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$8E+$12T=$268
$8(23)+&12(7)=$268
$184+$84=$268
$268=$268
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