Maxine and Sammie have to also mow their parking strips that are the
same size. Maxine can mow her parking strip in 6 minutes and Sammie
can mow his parking strip in 9 minutes. After how many minutes will
Sammie have twice as much grass to mow as Maxine?

I believe the answer is 3 minutes

At the 3 minute mark, Maxine will be half way done and Sammie will still have 6 minutes left to mow the grass

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get