Răspunsuri

2014-02-10T16:52:50+02:00
Lingurita=a
lingura=b

2b+4a=300
b=3a

2*3a+4a=300

6a+4a=300
10a=300
a=300/10
a=30 grame (o lingurita= 30 grame)
b=3*30
b=90 grame (o lingura=90 grame)