book Maths Puzzle Numerical Ability

Two trains start form the same place at the same time heading in directly opposite directions. One train averages 65 mph, and the other train averages 75 mph. After how long will

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book Other Question

Combine like terms.

5w + 5x - 9w




A) w + x B) 10w - 9x C) -4w + 5x D) wx

x^3 +9x^2+14x/x^2-4