Answer:
15 min
Step-by-step explanation:
Julia spends [tex]\frac{7}{12}[/tex] in math.
and spends [tex]\frac{1}{6}[/tex] in spelling.
Lets make [tex]\frac{1}{6}*2=\frac{2}{12}[/tex] for calculation propuses.
Julia spends [tex]\frac{7}{12} +\frac{2}{6}=\frac{9}{12}[/tex] doing her math and spelling homework.
And lets make [tex]1 hour =\frac{12}{12}[/tex]
[tex]\frac{12}{12}-\frac{9}{12} =\frac{3}{12}[/tex] and [tex]\frac{3}{12} / 3 =\frac{1}{4}[/tex]
So, Julia spends [tex]\frac{1}{4} hour[/tex] in reading.
If I divide an hour into 4 equal units, each unit equals 15 min, so 1 unit is 15 min.
Julia spends 15 min in reading.