109 3. Problemes amb taula de regles de tres
x=
15
?
5
?
1,5
?
=
Directa
Inversa
x=
3
?
1,5
?
3
=
Directa
Inversa
x=
400
?
200
?
4
?
=
huevos
Directa
Inversa
x=
20
?
4
?
50
?
=
m
Directa
Inversa
x=
300
?
6
?
12
?
=
huevos
Directa
Inversa
x=
5
?
40
?
16
?
=
días
Directa
Inversa
x=
1
?
40
?
80
?
=
días
Directa
Inversa
x=
120
?
48
?
20
?
=
km/h
Directa
Inversa
x=
6
?
3
?
2
?
=
grifos
Directa
Inversa
x=
4
?
10
?
10
?
=
Directa
Inversa
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