Respuesta :

mumsy

Answer:

Step-by-step explanation:

Janet can make:

4/5 of a necklace in      20min

2(4/5)=8/5 ............in       40 min

3(4/5)=12/5 ............in    60 min( one hour)

12/5=2 2/5 necklaces in one hour

or 2.4n in one hour