exam Maths Puzzle Numerical Ability

Assume that y varies inversely as x. If y=8 when x=2.5, find x when y=2.

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exam Other Question

help me again please? 1-4/k^2 / 1+ 1/k-2/k^2 Jan is flying a plane on a triangular course at 320 mi/hr. she flies due east for two hours and then turns right through a 65o angle. How long after turning will she be exactly southeast of where she started?
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