exam Maths Puzzle Numerical Ability

Working with your cousin, you can refinish a table in 8 hours. Working alone, your cousin can complete the job in 12 hours. How long would it take you to refinish the table working alone?

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exam Other Question

The hypotenuse of right triangle is 2.8 units long leg is 1.7 units longer than the shorter leg. Find the length of the sides of the triangle. can someone please help me with this problem:

Evaluate the function at the given value of the independent variable and simplify.

f(x) = x^3 + 3 / x^2 - 3 ; f(3)