exam Maths Puzzle Numerical Ability

Solve for x.

1/x + 1/x+16 = 1/15

The solutions are x = ________.

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exam Other Question

You received a year-end bonus of $17000 and invested it at 6.5%. How much additional money would you need to invest at 5% so that the return on the investments would be 6% Solve by completing the square.
x^2 = 5x + 2