Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

1/28 of a spool of ribbon

Step-by-step explanation:

Let x be the part of spool of ribbon used by Mary in each project.

It is given that Mary used 1/7 of a spool of ribbon to complete 4 projects.

So, in 4 projects the part of spool of ribbon is used =

Therefore, in each project the part of spool of ribbon is used =

⇒ In each project the part of spool of ribbon is used =

⇒ In each project the part of spool of ribbon is used =

Hence, Mary used 1/28 of a spool of ribbon to complete each project.

step-by-step explanation: 2

b

step-by-step explanation: