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03.02.2021 •
Mathematics
The mathville cafeteria sells eggs and toast at a fixed price. Yesterday, Rick ordered two eggs and one piece of toast and was charged $1.50. Today he ordered two eggs and three pieces of toast and was charged $2.30. Find the cost of each item.
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Ответ:
2e+t=1.50
2e+3t=2.30
2t=80, toast=40
2e+40=1.50
2e=110
1egg=55
Ответ:
6+6+2B=34
12+2B=34
B=11