Respuesta :

Answer:

70 minutes. I know this because

1/6 times 70 is equal to 70/420 which means 70 is the answer.  

Step-by-step explanation:

hope this helps:)

specialhiphopdancer

Answer:70 minutes

Step-by-step explanation:this is because since 1 min =6 cartons .And u are figuring out for 420 cartons ,you think what is 420 divide 6 which is 70 .So it means 70.

1 min = 6 cartons

x min = 420 cartons

do 420 times 1 it gives u 420 then divide by 6.