book Maths Puzzle Numerical Ability

James' average driving speed is 22 kilometers per hour faster that Lars'. In the same length of time it takes James to drive 616 kilometers, Lars drives only 462 kilometers. What

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Solve for x:

1 1 22
——————— + ——————— = —————————
x - 4 x + 4 x² - 16</PRE> i thought it was 4/14 but i was wrong...Which of the following is not a fractional representation for 2/7..




6/21

4/14


8/18


4/21