Llamacornbabe
20.12.2019 •
Mathematics
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Ответ:
2pen and 5 pencil cost 120
3pen and 2 pencil cost 114
let pen be X and pencil be Y
2x+5y=120 (1)
3x+2y=114 (2)
solving 1 and 2 , we can get the value of pen and pencil.
x=30
Y=12
Ответ:
b
Step-by-step explanation: