Răspunsuri

2014-07-23T11:44:25+03:00
Caiet/ creion=10/3 =>
3 caiet=10 creion
caiet=1.5
3*1.5= 10 creion
4.5= 10 creion
creion=4.5:10
creion=0.45
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2014-07-23T11:46:35+03:00
FIe
x-caietul
y-creion
x/y=10/3
x=1.5
1.5/y=10/3
10y=1.5x3=4.5
y=4.5/1-
y=0.45
Un creion costa 0.45
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