exam Maths Puzzle Numerical Ability

Science and medicine.
A plane flies 720 mi against a steady 30-mi/h headwind
and then returns to the same point with the wind. If the entire trip takes 10 hours, what is the plan

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exam Other Question
At the beginning of a drive on a highway that goes due south, Brenda noticed that she was 3 kilometers north of a tall cedar tree. If the midpoint of her drive was 6 kilometers sou Factor the polynomial. a^2-2a-35