Respuesta :

U multiply those fractions 12/28 and then u just simplify it
Sashaaldaz
16/21
dresses

Explanation:
The ratio of time required to dresses made is
3/4•k hours: 4/7 • k dresses for any constant k.


Specifically, if we want 1 hour then the letter K will need to be 4/3.
.
So
4/7 x 3/4= 16/21 in an hour.

I hope this make sense LOL!