book Maths Puzzle Numerical Ability

two cares leave st.louis. one travels north and one travles south. the care traveling north is moving 10mph faster than the care traveling south. after three hours the cars are 354 miles apart. how fast is each car traveling?

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book Other Question
Solve for x in these equations. Verify the solutions.


18-(x+3)-2x=4+(x-5) (-P->-L) & (-L->L) |- P

I have no clue what I am doing....i know i have to provisionally assume something but i have no clue where to get started. I understand what i'm doing i