Ellen, Giselle, and Brenda bake 111 cookies. Giselle bakes twice as many cookies as Brenda. Ellen bakes 9 fewer cookies than Giselle. How many cookies does Ellen bake?
since Giselle baked twice as many as Brenda, she baked
if you add up the total of cookies you get
(to get the answer for one person, you may just have to plug in random numbers to find out what works)
Ellen has baked
Suppose Brenda has baked
Then, Giselle has baked twice as many i.e.
and Ellen has baked
As total number of cakes are
Hence, Ellen has baked