book Maths Puzzle Numerical Ability

twnty more than a number is-12. find the number
didnt grasp u question
but if u r sying the number then the answer is -32 i think so plz clear it to me

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log x/n=log(x^1/n) Kindly provide me sufficient solutions, thanks!

If a one-way bus ride costs P90, and John rides to and from school in the bus every school day, which is the best estimate of how