exam Maths Puzzle Numerical Ability

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7x^2 + x - 17 over 2x^2 - 5x +3 minus 3x -4 over 2x - 3 euals 2x+1 over
x - 1 for x.

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exam Other Question

Mr.Nelson lost one of his students test papers. He knos thar thre other 4 students scored as follows: 12,20,21,12. He know that the average score is 19.4.What the score on the missing paper. The speed of one aircraft to that of another is 2 to 5. If the slower aircraft has a speed of 300 knots, what is the speed of the faster aircraft?