Respuesta :
Answer:
8 hours
Step-by-step explanation:
Did the Math, BROSKIE
Answer:
It will take Velma 4 hours and Brad 3 hours. In total 12 keychains.
Step-by-step explanation:
First I realized that I needed to find out wich number of keychains they would both land on and the first one was 12 so then I realized that 4 times 3 is 12 and 3 times 4 is 12.