book Maths Puzzle Numerical Ability

an overnight delivery service accepts packages of up to 165 inches in length and girth (distance areound the package) combined. a package has a fixed girth of 53 inches. Determi

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book Other Question

Sorry I had a wrong email address so here it is agagin;
A sum of $3500 is split between 2 investments, one paying 9% yrly interest the other paying 11%. If the return on th 11% in 1-9/x^2
________

1- 1/x - 6/x^2

Simplify the complex fraction