exam Maths Puzzle Numerical Ability

2.5% equals what decimal number, & fraction?

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exam Other Question

can you please explain this to me in step by step form so hopefully i can understand this.

log x 9/4 =2

please help me

thank you
julie
GIVEN THAT LOGa(x)=3.58 AND LOGa(y)= 4.79, FIND LOGa(y/x).