exam Maths Puzzle Numerical Ability

hello i need help on this LN problem

ln^x+ln^3x=12

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exam Other Question

Write the fraction as a percent.
1 1/5 (One and one/fifth)

can someone please help me with this? I have never been good with these kind of problems and obviously nothing has changed. I just do not understand how to do this. How do I write the equation for the question below, and then how do I solve it.

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