exam Maths Puzzle Numerical Ability

A worker can build a fence in 16 hours. With the help of an assistant, the fence can be built in 9 hours. How long should it take the assistant, working alone, to build the fence?

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exam Other Question

My history teacher gave us 12 essay questions to study. He�ll choose three for a test. I have time to study only eight questions. What are the chances that at least two will appear Geometry. The volume of the box is represented by (x^2+ 5x + 6)(x + 5). Find
the polynomial that represents the area of the bottom of the box: x + 2.

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