book Maths Puzzle Numerical Ability

The reciprocal of two times a certain integer plus the reciprocal of two more times than twice the integer equals 7/24. What is the integer?
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book Other Question

On a canoe trip Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (with the current) her average sp find factors of 36x^2-30x+6