exam Maths Puzzle Numerical Ability

Divide
x^2 – 9x + 20/ 3x – 15 ÷ x^2 – 16/9x + 36

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exam Other Question

I have been trying to solve this question but I cant figure it out: The sum of the present ages of Eric and his father is 58 years. In 10 years, his father will be twice as old as Eric will be at that time. Find their present ages. Please help. How do I do this?
Simplify the complex fraction.
each of these are underlined except for the last one.
w+3
4w
w-3
2w