exam Maths Puzzle Numerical Ability

Five pencils and three erasers cost 65 cents. Three pencils and two erasers cost 40 cents. Find the cost of one pencil and one eraser.

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exam Other Question

A plane flies 285 km due west and then 320 km due north. what are its distance and bearing from the starting point?
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1.) 2x^2 - 5x + 7 ÷ X - 2

2.) a^3 + b^3 + c^3 - abc ÷ a + b + c

3.) 9m^2 + 25 ÷ 3m + 5

4.) 6x^2 - 11 x + 21 ÷ x + 3