We want to know how many brownmies did Fred and his family eat together.
We will call to the total of the brownies by 1. On this case, after Fred ate 1/3 of the brownies, he will have:

This means that he has left 2/3 of the brownies. After his family ate 1/6 of the brownies:

This means they will have left 1/2 of the tray of brownies, and that they ate half of it.
Answer:
the first answer option (3, 0)
Step-by-step explanation:
the solution is always the crossing point between the lines.
and that is clearly shown to be (3, 0)
Answer:
first 1
Step-by-step explanation:
My answer comes out to 3hrs. Thats the closest i got to 300 Miles.